drivers/media/platform/coda/coda-common.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Coda multi-standard codec IP
   4  *
   5  * Copyright (C) 2012 Vista Silicon S.L.
   6  *    Javier Martin, <javier.martin@vista-silicon.com>
   7  *    Xavier Duret
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/delay.h>
  13 #include <linux/firmware.h>
  14 #include <linux/gcd.h>
  15 #include <linux/genalloc.h>
  16 #include <linux/idr.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/irq.h>
  20 #include <linux/kfifo.h>
  21 #include <linux/module.h>
  22 #include <linux/of_device.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/of.h>
  28 #include <linux/platform_data/media/coda.h>
  29 #include <linux/reset.h>
  30
  31 #include <media/v4l2-ctrls.h>
  32 #include <media/v4l2-device.h>
  33 #include <media/v4l2-event.h>
  34 #include <media/v4l2-ioctl.h>
  35 #include <media/v4l2-mem2mem.h>
  36 #include <media/videobuf2-v4l2.h>
  37 #include <media/videobuf2-dma-contig.h>
  38 #include <media/videobuf2-vmalloc.h>
  39
  40 #include "coda.h"
  41 #include "imx-vdoa.h"
  42
  43 #define CODA_NAME               "coda"
  44
  45 #define CODADX6_MAX_INSTANCES   4
  46 #define CODA_MAX_FORMATS        4
  47
  48 #define CODA_ISRAM_SIZE (2048 * 2)
  49
  50 #define MIN_W 48
  51 #define MIN_H 16
  52
  53 #define S_ALIGN         1 /* multiple of 2 */
  54 #define W_ALIGN         1 /* multiple of 2 */
  55 #define H_ALIGN         1 /* multiple of 2 */
  56
  57 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  58
  59 int coda_debug;
  60 module_param(coda_debug, int, 0644);
  61 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
  62
  63 static int disable_tiling;
  64 module_param(disable_tiling, int, 0644);
  65 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
  66
  67 static int disable_vdoa;
  68 module_param(disable_vdoa, int, 0644);
  69 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
  70
  71 static int enable_bwb = 0;
  72 module_param(enable_bwb, int, 0644);
  73 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
  74
  75 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
  76 {
  77         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  78                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  79         writel(data, dev->regs_base + reg);
  80 }
  81
  82 unsigned int coda_read(struct coda_dev *dev, u32 reg)
  83 {
  84         u32 data;
  85
  86         data = readl(dev->regs_base + reg);
  87         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  88                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  89         return data;
  90 }
  91
  92 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
  93                      struct vb2_v4l2_buffer *buf, unsigned int reg_y)
  94 {
  95         u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
  96         u32 base_cb, base_cr;
  97
  98         switch (q_data->fourcc) {
  99         case V4L2_PIX_FMT_YUYV:
 100                 /* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
 101         case V4L2_PIX_FMT_NV12:
 102         case V4L2_PIX_FMT_YUV420:
 103         default:
 104                 base_cb = base_y + q_data->bytesperline * q_data->height;
 105                 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
 106                 break;
 107         case V4L2_PIX_FMT_YVU420:
 108                 /* Switch Cb and Cr for YVU420 format */
 109                 base_cr = base_y + q_data->bytesperline * q_data->height;
 110                 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
 111                 break;
 112         case V4L2_PIX_FMT_YUV422P:
 113                 base_cb = base_y + q_data->bytesperline * q_data->height;
 114                 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
 115         }
 116
 117         coda_write(ctx->dev, base_y, reg_y);
 118         coda_write(ctx->dev, base_cb, reg_y + 4);
 119         coda_write(ctx->dev, base_cr, reg_y + 8);
 120 }
 121
 122 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
 123         { mode, src_fourcc, dst_fourcc, max_w, max_h }
 124
 125 /*
 126  * Arrays of codecs supported by each given version of Coda:
 127  *  i.MX27 -> codadx6
 128  *  i.MX51 -> codahx4
 129  *  i.MX53 -> coda7
 130  *  i.MX6  -> coda960
 131  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
 132  */
 133 static const struct coda_codec codadx6_codecs[] = {
 134         CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
 135         CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
 136 };
 137
 138 static const struct coda_codec codahx4_codecs[] = {
 139         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   720, 576),
 140         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 141         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 142         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1280, 720),
 143 };
 144
 145 static const struct coda_codec coda7_codecs[] = {
 146         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
 147         CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
 148         CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 149         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 150         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 151         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 152         CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 153 };
 154
 155 static const struct coda_codec coda9_codecs[] = {
 156         CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
 157         CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
 158         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 159         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 160         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 161 };
 162
 163 struct coda_video_device {
 164         const char *name;
 165         enum coda_inst_type type;
 166         const struct coda_context_ops *ops;
 167         bool direct;
 168         u32 src_formats[CODA_MAX_FORMATS];
 169         u32 dst_formats[CODA_MAX_FORMATS];
 170 };
 171
 172 static const struct coda_video_device coda_bit_encoder = {
 173         .name = "coda-encoder",
 174         .type = CODA_INST_ENCODER,
 175         .ops = &coda_bit_encode_ops,
 176         .src_formats = {
 177                 V4L2_PIX_FMT_NV12,
 178                 V4L2_PIX_FMT_YUV420,
 179                 V4L2_PIX_FMT_YVU420,
 180         },
 181         .dst_formats = {
 182                 V4L2_PIX_FMT_H264,
 183                 V4L2_PIX_FMT_MPEG4,
 184         },
 185 };
 186
 187 static const struct coda_video_device coda_bit_jpeg_encoder = {
 188         .name = "coda-jpeg-encoder",
 189         .type = CODA_INST_ENCODER,
 190         .ops = &coda_bit_encode_ops,
 191         .src_formats = {
 192                 V4L2_PIX_FMT_NV12,
 193                 V4L2_PIX_FMT_YUV420,
 194                 V4L2_PIX_FMT_YVU420,
 195                 V4L2_PIX_FMT_YUV422P,
 196         },
 197         .dst_formats = {
 198                 V4L2_PIX_FMT_JPEG,
 199         },
 200 };
 201
 202 static const struct coda_video_device coda_bit_decoder = {
 203         .name = "coda-decoder",
 204         .type = CODA_INST_DECODER,
 205         .ops = &coda_bit_decode_ops,
 206         .src_formats = {
 207                 V4L2_PIX_FMT_H264,
 208                 V4L2_PIX_FMT_MPEG2,
 209                 V4L2_PIX_FMT_MPEG4,
 210         },
 211         .dst_formats = {
 212                 V4L2_PIX_FMT_NV12,
 213                 V4L2_PIX_FMT_YUV420,
 214                 V4L2_PIX_FMT_YVU420,
 215                 /*
 216                  * If V4L2_PIX_FMT_YUYV should be default,
 217                  * set_default_params() must be adjusted.
 218                  */
 219                 V4L2_PIX_FMT_YUYV,
 220         },
 221 };
 222
 223 static const struct coda_video_device coda_bit_jpeg_decoder = {
 224         .name = "coda-jpeg-decoder",
 225         .type = CODA_INST_DECODER,
 226         .ops = &coda_bit_decode_ops,
 227         .src_formats = {
 228                 V4L2_PIX_FMT_JPEG,
 229         },
 230         .dst_formats = {
 231                 V4L2_PIX_FMT_NV12,
 232                 V4L2_PIX_FMT_YUV420,
 233                 V4L2_PIX_FMT_YVU420,
 234                 V4L2_PIX_FMT_YUV422P,
 235         },
 236 };
 237
 238 static const struct coda_video_device *codadx6_video_devices[] = {
 239         &coda_bit_encoder,
 240 };
 241
 242 static const struct coda_video_device *codahx4_video_devices[] = {
 243         &coda_bit_encoder,
 244         &coda_bit_decoder,
 245 };
 246
 247 static const struct coda_video_device *coda7_video_devices[] = {
 248         &coda_bit_jpeg_encoder,
 249         &coda_bit_jpeg_decoder,
 250         &coda_bit_encoder,
 251         &coda_bit_decoder,
 252 };
 253
 254 static const struct coda_video_device *coda9_video_devices[] = {
 255         &coda_bit_encoder,
 256         &coda_bit_decoder,
 257 };
 258
 259 /*
 260  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 261  * tables.
 262  */
 263 static u32 coda_format_normalize_yuv(u32 fourcc)
 264 {
 265         switch (fourcc) {
 266         case V4L2_PIX_FMT_NV12:
 267         case V4L2_PIX_FMT_YUV420:
 268         case V4L2_PIX_FMT_YVU420:
 269         case V4L2_PIX_FMT_YUV422P:
 270         case V4L2_PIX_FMT_YUYV:
 271                 return V4L2_PIX_FMT_YUV420;
 272         default:
 273                 return fourcc;
 274         }
 275 }
 276
 277 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 278                                                 int src_fourcc, int dst_fourcc)
 279 {
 280         const struct coda_codec *codecs = dev->devtype->codecs;
 281         int num_codecs = dev->devtype->num_codecs;
 282         int k;
 283
 284         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 285         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 286         if (src_fourcc == dst_fourcc)
 287                 return NULL;
 288
 289         for (k = 0; k < num_codecs; k++) {
 290                 if (codecs[k].src_fourcc == src_fourcc &&
 291                     codecs[k].dst_fourcc == dst_fourcc)
 292                         break;
 293         }
 294
 295         if (k == num_codecs)
 296                 return NULL;
 297
 298         return &codecs[k];
 299 }
 300
 301 static void coda_get_max_dimensions(struct coda_dev *dev,
 302                                     const struct coda_codec *codec,
 303                                     int *max_w, int *max_h)
 304 {
 305         const struct coda_codec *codecs = dev->devtype->codecs;
 306         int num_codecs = dev->devtype->num_codecs;
 307         unsigned int w, h;
 308         int k;
 309
 310         if (codec) {
 311                 w = codec->max_w;
 312                 h = codec->max_h;
 313         } else {
 314                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 315                         w = max(w, codecs[k].max_w);
 316                         h = max(h, codecs[k].max_h);
 317                 }
 318         }
 319
 320         if (max_w)
 321                 *max_w = w;
 322         if (max_h)
 323                 *max_h = h;
 324 }
 325
 326 static const struct coda_video_device *to_coda_video_device(struct video_device
 327                                                             *vdev)
 328 {
 329         struct coda_dev *dev = video_get_drvdata(vdev);
 330         unsigned int i = vdev - dev->vfd;
 331
 332         if (i >= dev->devtype->num_vdevs)
 333                 return NULL;
 334
 335         return dev->devtype->vdevs[i];
 336 }
 337
 338 const char *coda_product_name(int product)
 339 {
 340         static char buf[9];
 341
 342         switch (product) {
 343         case CODA_DX6:
 344                 return "CodaDx6";
 345         case CODA_HX4:
 346                 return "CodaHx4";
 347         case CODA_7541:
 348                 return "CODA7541";
 349         case CODA_960:
 350                 return "CODA960";
 351         default:
 352                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 353                 return buf;
 354         }
 355 }
 356
 357 static struct vdoa_data *coda_get_vdoa_data(void)
 358 {
 359         struct device_node *vdoa_node;
 360         struct platform_device *vdoa_pdev;
 361         struct vdoa_data *vdoa_data = NULL;
 362
 363         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 364         if (!vdoa_node)
 365                 return NULL;
 366
 367         vdoa_pdev = of_find_device_by_node(vdoa_node);
 368         if (!vdoa_pdev)
 369                 goto out;
 370
 371         vdoa_data = platform_get_drvdata(vdoa_pdev);
 372         if (!vdoa_data)
 373                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 374
 375 out:
 376         of_node_put(vdoa_node);
 377
 378         return vdoa_data;
 379 }
 380
 381 /*
 382  * V4L2 ioctl() operations.
 383  */
 384 static int coda_querycap(struct file *file, void *priv,
 385                          struct v4l2_capability *cap)
 386 {
 387         struct coda_ctx *ctx = fh_to_ctx(priv);
 388
 389         strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 390         strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 391                 sizeof(cap->card));
 392         strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 393         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 394         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 395
 396         return 0;
 397 }
 398
 399 static int coda_enum_fmt(struct file *file, void *priv,
 400                          struct v4l2_fmtdesc *f)
 401 {
 402         struct video_device *vdev = video_devdata(file);
 403         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 404         struct coda_ctx *ctx = fh_to_ctx(priv);
 405         const u32 *formats;
 406
 407         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 408                 formats = cvd->src_formats;
 409         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 410                 formats = cvd->dst_formats;
 411         else
 412                 return -EINVAL;
 413
 414         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 415                 return -EINVAL;
 416
 417         /* Skip YUYV if the vdoa is not available */
 418         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 419             formats[f->index] == V4L2_PIX_FMT_YUYV)
 420                 return -EINVAL;
 421
 422         f->pixelformat = formats[f->index];
 423
 424         return 0;
 425 }
 426
 427 static int coda_g_fmt(struct file *file, void *priv,
 428                       struct v4l2_format *f)
 429 {
 430         struct coda_q_data *q_data;
 431         struct coda_ctx *ctx = fh_to_ctx(priv);
 432
 433         q_data = get_q_data(ctx, f->type);
 434         if (!q_data)
 435                 return -EINVAL;
 436
 437         f->fmt.pix.field        = V4L2_FIELD_NONE;
 438         f->fmt.pix.pixelformat  = q_data->fourcc;
 439         f->fmt.pix.width        = q_data->width;
 440         f->fmt.pix.height       = q_data->height;
 441         f->fmt.pix.bytesperline = q_data->bytesperline;
 442
 443         f->fmt.pix.sizeimage    = q_data->sizeimage;
 444         f->fmt.pix.colorspace   = ctx->colorspace;
 445         f->fmt.pix.xfer_func    = ctx->xfer_func;
 446         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 447         f->fmt.pix.quantization = ctx->quantization;
 448
 449         return 0;
 450 }
 451
 452 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 453 {
 454         struct coda_q_data *q_data;
 455         const u32 *formats;
 456         int i;
 457
 458         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 459                 formats = ctx->cvd->src_formats;
 460         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 461                 formats = ctx->cvd->dst_formats;
 462         else
 463                 return -EINVAL;
 464
 465         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 466                 /* Skip YUYV if the vdoa is not available */
 467                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 468                     formats[i] == V4L2_PIX_FMT_YUYV)
 469                         continue;
 470
 471                 if (formats[i] == f->fmt.pix.pixelformat) {
 472                         f->fmt.pix.pixelformat = formats[i];
 473                         return 0;
 474                 }
 475         }
 476
 477         /* Fall back to currently set pixelformat */
 478         q_data = get_q_data(ctx, f->type);
 479         f->fmt.pix.pixelformat = q_data->fourcc;
 480
 481         return 0;
 482 }
 483
 484 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 485                              bool *use_vdoa)
 486 {
 487         int err;
 488
 489         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 490                 return -EINVAL;
 491
 492         if (!use_vdoa)
 493                 return -EINVAL;
 494
 495         if (!ctx->vdoa) {
 496                 *use_vdoa = false;
 497                 return 0;
 498         }
 499
 500         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 501                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 502         if (err) {
 503                 *use_vdoa = false;
 504                 return 0;
 505         }
 506
 507         *use_vdoa = true;
 508         return 0;
 509 }
 510
 511 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 512                                             u32 width, u32 height)
 513 {
 514         /*
 515          * This is a rough estimate for sensible compressed buffer
 516          * sizes (between 1 and 16 bits per pixel). This could be
 517          * improved by better format specific worst case estimates.
 518          */
 519         return round_up(clamp(sizeimage, width * height / 8,
 520                                          width * height * 2), PAGE_SIZE);
 521 }
 522
 523 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 524                         struct v4l2_format *f)
 525 {
 526         struct coda_dev *dev = ctx->dev;
 527         unsigned int max_w, max_h;
 528         enum v4l2_field field;
 529
 530         field = f->fmt.pix.field;
 531         if (field == V4L2_FIELD_ANY)
 532                 field = V4L2_FIELD_NONE;
 533         else if (V4L2_FIELD_NONE != field)
 534                 return -EINVAL;
 535
 536         /* V4L2 specification suggests the driver corrects the format struct
 537          * if any of the dimensions is unsupported */
 538         f->fmt.pix.field = field;
 539
 540         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 541         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 542                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 543                               S_ALIGN);
 544
 545         switch (f->fmt.pix.pixelformat) {
 546         case V4L2_PIX_FMT_NV12:
 547         case V4L2_PIX_FMT_YUV420:
 548         case V4L2_PIX_FMT_YVU420:
 549                 /*
 550                  * Frame stride must be at least multiple of 8,
 551                  * but multiple of 16 for h.264 or JPEG 4:2:x
 552                  */
 553                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 554                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 555                                         f->fmt.pix.height * 3 / 2;
 556                 break;
 557         case V4L2_PIX_FMT_YUYV:
 558                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 559                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 560                                         f->fmt.pix.height;
 561                 break;
 562         case V4L2_PIX_FMT_YUV422P:
 563                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 564                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 565                                         f->fmt.pix.height * 2;
 566                 break;
 567         case V4L2_PIX_FMT_JPEG:
 568         case V4L2_PIX_FMT_H264:
 569         case V4L2_PIX_FMT_MPEG4:
 570         case V4L2_PIX_FMT_MPEG2:
 571                 f->fmt.pix.bytesperline = 0;
 572                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 573                                                         f->fmt.pix.sizeimage,
 574                                                         f->fmt.pix.width,
 575                                                         f->fmt.pix.height);
 576                 break;
 577         default:
 578                 BUG();
 579         }
 580
 581         return 0;
 582 }
 583
 584 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 585                                 struct v4l2_format *f)
 586 {
 587         struct coda_ctx *ctx = fh_to_ctx(priv);
 588         const struct coda_q_data *q_data_src;
 589         const struct coda_codec *codec;
 590         struct vb2_queue *src_vq;
 591         int ret;
 592         bool use_vdoa;
 593
 594         ret = coda_try_pixelformat(ctx, f);
 595         if (ret < 0)
 596                 return ret;
 597
 598         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 599
 600         /*
 601          * If the source format is already fixed, only allow the same output
 602          * resolution
 603          */
 604         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 605         if (vb2_is_streaming(src_vq)) {
 606                 f->fmt.pix.width = q_data_src->width;
 607                 f->fmt.pix.height = q_data_src->height;
 608         }
 609
 610         f->fmt.pix.colorspace = ctx->colorspace;
 611         f->fmt.pix.xfer_func = ctx->xfer_func;
 612         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 613         f->fmt.pix.quantization = ctx->quantization;
 614
 615         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 616         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 617                                 f->fmt.pix.pixelformat);
 618         if (!codec)
 619                 return -EINVAL;
 620
 621         ret = coda_try_fmt(ctx, codec, f);
 622         if (ret < 0)
 623                 return ret;
 624
 625         /* The h.264 decoder only returns complete 16x16 macroblocks */
 626         if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
 627                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
 628                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 629                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 630                                        f->fmt.pix.height * 3 / 2;
 631
 632                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 633                 if (ret < 0)
 634                         return ret;
 635
 636                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 637                         if (!use_vdoa)
 638                                 return -EINVAL;
 639
 640                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 641                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 642                                 f->fmt.pix.height;
 643                 }
 644         }
 645
 646         return 0;
 647 }
 648
 649 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 650 {
 651         enum v4l2_colorspace colorspace;
 652
 653         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 654                 colorspace = V4L2_COLORSPACE_JPEG;
 655         else if (fmt->width <= 720 && fmt->height <= 576)
 656                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 657         else
 658                 colorspace = V4L2_COLORSPACE_REC709;
 659
 660         fmt->colorspace = colorspace;
 661         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 662         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 663         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 664 }
 665
 666 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 667                                 struct v4l2_format *f)
 668 {
 669         struct coda_ctx *ctx = fh_to_ctx(priv);
 670         struct coda_dev *dev = ctx->dev;
 671         const struct coda_q_data *q_data_dst;
 672         const struct coda_codec *codec;
 673         int ret;
 674
 675         ret = coda_try_pixelformat(ctx, f);
 676         if (ret < 0)
 677                 return ret;
 678
 679         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 680                 coda_set_default_colorspace(&f->fmt.pix);
 681
 682         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 683         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 684
 685         return coda_try_fmt(ctx, codec, f);
 686 }
 687
 688 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 689                       struct v4l2_rect *r)
 690 {
 691         struct coda_q_data *q_data;
 692         struct vb2_queue *vq;
 693
 694         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 695         if (!vq)
 696                 return -EINVAL;
 697
 698         q_data = get_q_data(ctx, f->type);
 699         if (!q_data)
 700                 return -EINVAL;
 701
 702         if (vb2_is_busy(vq)) {
 703                 v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
 704                          __func__, v4l2_type_names[f->type], vq->num_buffers);
 705                 return -EBUSY;
 706         }
 707
 708         q_data->fourcc = f->fmt.pix.pixelformat;
 709         q_data->width = f->fmt.pix.width;
 710         q_data->height = f->fmt.pix.height;
 711         q_data->bytesperline = f->fmt.pix.bytesperline;
 712         q_data->sizeimage = f->fmt.pix.sizeimage;
 713         if (r) {
 714                 q_data->rect = *r;
 715         } else {
 716                 q_data->rect.left = 0;
 717                 q_data->rect.top = 0;
 718                 q_data->rect.width = f->fmt.pix.width;
 719                 q_data->rect.height = f->fmt.pix.height;
 720         }
 721
 722         switch (f->fmt.pix.pixelformat) {
 723         case V4L2_PIX_FMT_YUYV:
 724                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 725                 break;
 726         case V4L2_PIX_FMT_NV12:
 727                 if (!disable_tiling && ctx->dev->devtype->product == CODA_960) {
 728                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 729                         break;
 730                 }
 731                 /* else fall through */
 732         case V4L2_PIX_FMT_YUV420:
 733         case V4L2_PIX_FMT_YVU420:
 734                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 735                 break;
 736         default:
 737                 break;
 738         }
 739
 740         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 741             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 742             ctx->use_vdoa)
 743                 vdoa_context_configure(ctx->vdoa,
 744                                        round_up(f->fmt.pix.width, 16),
 745                                        f->fmt.pix.height,
 746                                        f->fmt.pix.pixelformat);
 747         else
 748                 ctx->use_vdoa = false;
 749
 750         coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
 751                  v4l2_type_names[f->type], q_data->width, q_data->height,
 752                  (char *)&q_data->fourcc,
 753                  (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 754
 755         return 0;
 756 }
 757
 758 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 759                               struct v4l2_format *f)
 760 {
 761         struct coda_ctx *ctx = fh_to_ctx(priv);
 762         struct coda_q_data *q_data_src;
 763         const struct coda_codec *codec;
 764         struct v4l2_rect r;
 765         int ret;
 766
 767         ret = coda_try_fmt_vid_cap(file, priv, f);
 768         if (ret)
 769                 return ret;
 770
 771         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 772         r.left = 0;
 773         r.top = 0;
 774         r.width = q_data_src->width;
 775         r.height = q_data_src->height;
 776
 777         ret = coda_s_fmt(ctx, f, &r);
 778         if (ret)
 779                 return ret;
 780
 781         if (ctx->inst_type != CODA_INST_ENCODER)
 782                 return 0;
 783
 784         /* Setting the coded format determines the selected codec */
 785         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 786                                 f->fmt.pix.pixelformat);
 787         if (!codec) {
 788                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 789                 return -EINVAL;
 790         }
 791         ctx->codec = codec;
 792
 793         ctx->colorspace = f->fmt.pix.colorspace;
 794         ctx->xfer_func = f->fmt.pix.xfer_func;
 795         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 796         ctx->quantization = f->fmt.pix.quantization;
 797
 798         return 0;
 799 }
 800
 801 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 802                               struct v4l2_format *f)
 803 {
 804         struct coda_ctx *ctx = fh_to_ctx(priv);
 805         const struct coda_codec *codec;
 806         struct v4l2_format f_cap;
 807         struct vb2_queue *dst_vq;
 808         int ret;
 809
 810         ret = coda_try_fmt_vid_out(file, priv, f);
 811         if (ret)
 812                 return ret;
 813
 814         ret = coda_s_fmt(ctx, f, NULL);
 815         if (ret)
 816                 return ret;
 817
 818         ctx->colorspace = f->fmt.pix.colorspace;
 819         ctx->xfer_func = f->fmt.pix.xfer_func;
 820         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 821         ctx->quantization = f->fmt.pix.quantization;
 822
 823         if (ctx->inst_type != CODA_INST_DECODER)
 824                 return 0;
 825
 826         /* Setting the coded format determines the selected codec */
 827         codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
 828                                 V4L2_PIX_FMT_YUV420);
 829         if (!codec) {
 830                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 831                 return -EINVAL;
 832         }
 833         ctx->codec = codec;
 834
 835         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 836         if (!dst_vq)
 837                 return -EINVAL;
 838
 839         /*
 840          * Setting the capture queue format is not possible while the capture
 841          * queue is still busy. This is not an error, but the user will have to
 842          * make sure themselves that the capture format is set correctly before
 843          * starting the output queue again.
 844          */
 845         if (vb2_is_busy(dst_vq))
 846                 return 0;
 847
 848         memset(&f_cap, 0, sizeof(f_cap));
 849         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 850         coda_g_fmt(file, priv, &f_cap);
 851         f_cap.fmt.pix.width = f->fmt.pix.width;
 852         f_cap.fmt.pix.height = f->fmt.pix.height;
 853
 854         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 855 }
 856
 857 static int coda_reqbufs(struct file *file, void *priv,
 858                         struct v4l2_requestbuffers *rb)
 859 {
 860         struct coda_ctx *ctx = fh_to_ctx(priv);
 861         int ret;
 862
 863         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 864         if (ret)
 865                 return ret;
 866
 867         /*
 868          * Allow to allocate instance specific per-context buffers, such as
 869          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 870          */
 871         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 872                 return ctx->ops->reqbufs(ctx, rb);
 873
 874         return 0;
 875 }
 876
 877 static int coda_qbuf(struct file *file, void *priv,
 878                      struct v4l2_buffer *buf)
 879 {
 880         struct coda_ctx *ctx = fh_to_ctx(priv);
 881
 882         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 883 }
 884
 885 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
 886                                       struct vb2_v4l2_buffer *buf)
 887 {
 888         return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
 889                 (buf->sequence == (ctx->qsequence - 1)));
 890 }
 891
 892 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
 893                        enum vb2_buffer_state state)
 894 {
 895         const struct v4l2_event eos_event = {
 896                 .type = V4L2_EVENT_EOS
 897         };
 898
 899         if (coda_buf_is_end_of_stream(ctx, buf)) {
 900                 buf->flags |= V4L2_BUF_FLAG_LAST;
 901
 902                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 903         }
 904
 905         v4l2_m2m_buf_done(buf, state);
 906 }
 907
 908 static int coda_g_selection(struct file *file, void *fh,
 909                             struct v4l2_selection *s)
 910 {
 911         struct coda_ctx *ctx = fh_to_ctx(fh);
 912         struct coda_q_data *q_data;
 913         struct v4l2_rect r, *rsel;
 914
 915         q_data = get_q_data(ctx, s->type);
 916         if (!q_data)
 917                 return -EINVAL;
 918
 919         r.left = 0;
 920         r.top = 0;
 921         r.width = q_data->width;
 922         r.height = q_data->height;
 923         rsel = &q_data->rect;
 924
 925         switch (s->target) {
 926         case V4L2_SEL_TGT_CROP_DEFAULT:
 927         case V4L2_SEL_TGT_CROP_BOUNDS:
 928                 rsel = &r;
 929                 /* fallthrough */
 930         case V4L2_SEL_TGT_CROP:
 931                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 932                         return -EINVAL;
 933                 break;
 934         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 935         case V4L2_SEL_TGT_COMPOSE_PADDED:
 936                 rsel = &r;
 937                 /* fallthrough */
 938         case V4L2_SEL_TGT_COMPOSE:
 939         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 940                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 941                         return -EINVAL;
 942                 break;
 943         default:
 944                 return -EINVAL;
 945         }
 946
 947         s->r = *rsel;
 948
 949         return 0;
 950 }
 951
 952 static int coda_s_selection(struct file *file, void *fh,
 953                             struct v4l2_selection *s)
 954 {
 955         struct coda_ctx *ctx = fh_to_ctx(fh);
 956         struct coda_q_data *q_data;
 957
 958         switch (s->target) {
 959         case V4L2_SEL_TGT_CROP:
 960                 if (ctx->inst_type == CODA_INST_ENCODER &&
 961                     s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 962                         q_data = get_q_data(ctx, s->type);
 963                         if (!q_data)
 964                                 return -EINVAL;
 965
 966                         s->r.left = 0;
 967                         s->r.top = 0;
 968                         s->r.width = clamp(s->r.width, 2U, q_data->width);
 969                         s->r.height = clamp(s->r.height, 2U, q_data->height);
 970
 971                         if (s->flags & V4L2_SEL_FLAG_LE) {
 972                                 s->r.width = round_up(s->r.width, 2);
 973                                 s->r.height = round_up(s->r.height, 2);
 974                         } else {
 975                                 s->r.width = round_down(s->r.width, 2);
 976                                 s->r.height = round_down(s->r.height, 2);
 977                         }
 978
 979                         q_data->rect = s->r;
 980
 981                         coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
 982                                  s->r.width, s->r.height);
 983
 984                         return 0;
 985                 }
 986                 /* else fall through */
 987         case V4L2_SEL_TGT_NATIVE_SIZE:
 988         case V4L2_SEL_TGT_COMPOSE:
 989                 return coda_g_selection(file, fh, s);
 990         default:
 991                 /* v4l2-compliance expects this to fail for read-only targets */
 992                 return -EINVAL;
 993         }
 994 }
 995
 996 static int coda_try_encoder_cmd(struct file *file, void *fh,
 997                                 struct v4l2_encoder_cmd *ec)
 998 {
 999         struct coda_ctx *ctx = fh_to_ctx(fh);
1000
1001         if (ctx->inst_type != CODA_INST_ENCODER)
1002                 return -ENOTTY;
1003
1004         if (ec->cmd != V4L2_ENC_CMD_STOP)
1005                 return -EINVAL;
1006
1007         if (ec->flags & V4L2_ENC_CMD_STOP_AT_GOP_END)
1008                 return -EINVAL;
1009
1010         return 0;
1011 }
1012
1013 static int coda_encoder_cmd(struct file *file, void *fh,
1014                             struct v4l2_encoder_cmd *ec)
1015 {
1016         struct coda_ctx *ctx = fh_to_ctx(fh);
1017         struct vb2_queue *dst_vq;
1018         int ret;
1019
1020         ret = coda_try_encoder_cmd(file, fh, ec);
1021         if (ret < 0)
1022                 return ret;
1023
1024         /* Set the stream-end flag on this context */
1025         ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1026
1027         /* If there is no buffer in flight, wake up */
1028         if (!ctx->streamon_out || ctx->qsequence == ctx->osequence) {
1029                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1030                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
1031                 dst_vq->last_buffer_dequeued = true;
1032                 wake_up(&dst_vq->done_wq);
1033         }
1034
1035         return 0;
1036 }
1037
1038 static int coda_try_decoder_cmd(struct file *file, void *fh,
1039                                 struct v4l2_decoder_cmd *dc)
1040 {
1041         struct coda_ctx *ctx = fh_to_ctx(fh);
1042
1043         if (ctx->inst_type != CODA_INST_DECODER)
1044                 return -ENOTTY;
1045
1046         if (dc->cmd != V4L2_DEC_CMD_STOP)
1047                 return -EINVAL;
1048
1049         if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
1050                 return -EINVAL;
1051
1052         if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
1053                 return -EINVAL;
1054
1055         return 0;
1056 }
1057
1058 static int coda_decoder_cmd(struct file *file, void *fh,
1059                             struct v4l2_decoder_cmd *dc)
1060 {
1061         struct coda_ctx *ctx = fh_to_ctx(fh);
1062         int ret;
1063
1064         ret = coda_try_decoder_cmd(file, fh, dc);
1065         if (ret < 0)
1066                 return ret;
1067
1068         /* Set the stream-end flag on this context */
1069         coda_bit_stream_end_flag(ctx);
1070         ctx->hold = false;
1071         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1072
1073         return 0;
1074 }
1075
1076 static int coda_enum_framesizes(struct file *file, void *fh,
1077                                 struct v4l2_frmsizeenum *fsize)
1078 {
1079         struct coda_ctx *ctx = fh_to_ctx(fh);
1080         struct coda_q_data *q_data_dst;
1081         const struct coda_codec *codec;
1082
1083         if (ctx->inst_type != CODA_INST_ENCODER)
1084                 return -ENOTTY;
1085
1086         if (fsize->index)
1087                 return -EINVAL;
1088
1089         if (coda_format_normalize_yuv(fsize->pixel_format) ==
1090             V4L2_PIX_FMT_YUV420) {
1091                 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1092                 codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1093                                         q_data_dst->fourcc);
1094         } else {
1095                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1096                                         fsize->pixel_format);
1097         }
1098         if (!codec)
1099                 return -EINVAL;
1100
1101         fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1102         fsize->stepwise.min_width = MIN_W;
1103         fsize->stepwise.max_width = codec->max_w;
1104         fsize->stepwise.step_width = 1;
1105         fsize->stepwise.min_height = MIN_H;
1106         fsize->stepwise.max_height = codec->max_h;
1107         fsize->stepwise.step_height = 1;
1108
1109         return 0;
1110 }
1111
1112 static int coda_enum_frameintervals(struct file *file, void *fh,
1113                                     struct v4l2_frmivalenum *f)
1114 {
1115         struct coda_ctx *ctx = fh_to_ctx(fh);
1116         int i;
1117
1118         if (f->index)
1119                 return -EINVAL;
1120
1121         /* Disallow YUYV if the vdoa is not available */
1122         if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1123                 return -EINVAL;
1124
1125         for (i = 0; i < CODA_MAX_FORMATS; i++) {
1126                 if (f->pixel_format == ctx->cvd->src_formats[i] ||
1127                     f->pixel_format == ctx->cvd->dst_formats[i])
1128                         break;
1129         }
1130         if (i == CODA_MAX_FORMATS)
1131                 return -EINVAL;
1132
1133         f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1134         f->stepwise.min.numerator = 1;
1135         f->stepwise.min.denominator = 65535;
1136         f->stepwise.max.numerator = 65536;
1137         f->stepwise.max.denominator = 1;
1138         f->stepwise.step.numerator = 1;
1139         f->stepwise.step.denominator = 1;
1140
1141         return 0;
1142 }
1143
1144 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1145 {
1146         struct coda_ctx *ctx = fh_to_ctx(fh);
1147         struct v4l2_fract *tpf;
1148
1149         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1150                 return -EINVAL;
1151
1152         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1153         tpf = &a->parm.output.timeperframe;
1154         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1155         tpf->numerator = 1 + (ctx->params.framerate >>
1156                               CODA_FRATE_DIV_OFFSET);
1157
1158         return 0;
1159 }
1160
1161 /*
1162  * Approximate timeperframe v4l2_fract with values that can be written
1163  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1164  */
1165 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1166 {
1167         struct v4l2_fract s = *timeperframe;
1168         struct v4l2_fract f0;
1169         struct v4l2_fract f1 = { 1, 0 };
1170         struct v4l2_fract f2 = { 0, 1 };
1171         unsigned int i, div, s_denominator;
1172
1173         /* Lower bound is 1/65535 */
1174         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1175                 timeperframe->numerator = 1;
1176                 timeperframe->denominator = 65535;
1177                 return;
1178         }
1179
1180         /* Upper bound is 65536/1 */
1181         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1182                 timeperframe->numerator = 65536;
1183                 timeperframe->denominator = 1;
1184                 return;
1185         }
1186
1187         /* Reduce fraction to lowest terms */
1188         div = gcd(s.numerator, s.denominator);
1189         if (div > 1) {
1190                 s.numerator /= div;
1191                 s.denominator /= div;
1192         }
1193
1194         if (s.numerator <= 65536 && s.denominator < 65536) {
1195                 *timeperframe = s;
1196                 return;
1197         }
1198
1199         /* Find successive convergents from continued fraction expansion */
1200         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1201                 f0 = f1;
1202                 f1 = f2;
1203
1204                 /* Stop when f2 exactly equals timeperframe */
1205                 if (s.numerator == 0)
1206                         break;
1207
1208                 i = s.denominator / s.numerator;
1209
1210                 f2.numerator = f0.numerator + i * f1.numerator;
1211                 f2.denominator = f0.denominator + i * f2.denominator;
1212
1213                 s_denominator = s.numerator;
1214                 s.numerator = s.denominator % s.numerator;
1215                 s.denominator = s_denominator;
1216         }
1217
1218         *timeperframe = f1;
1219 }
1220
1221 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1222 {
1223         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1224                 timeperframe->denominator;
1225 }
1226
1227 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1228 {
1229         struct coda_ctx *ctx = fh_to_ctx(fh);
1230         struct v4l2_fract *tpf;
1231
1232         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1233                 return -EINVAL;
1234
1235         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1236         tpf = &a->parm.output.timeperframe;
1237         coda_approximate_timeperframe(tpf);
1238         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1239
1240         return 0;
1241 }
1242
1243 static int coda_subscribe_event(struct v4l2_fh *fh,
1244                                 const struct v4l2_event_subscription *sub)
1245 {
1246         switch (sub->type) {
1247         case V4L2_EVENT_EOS:
1248                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1249         default:
1250                 return v4l2_ctrl_subscribe_event(fh, sub);
1251         }
1252 }
1253
1254 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1255         .vidioc_querycap        = coda_querycap,
1256
1257         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1258         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1259         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1260         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1261
1262         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1263         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1264         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1265         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1266
1267         .vidioc_reqbufs         = coda_reqbufs,
1268         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1269
1270         .vidioc_qbuf            = coda_qbuf,
1271         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1272         .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
1273         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1274         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1275
1276         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1277         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1278
1279         .vidioc_g_selection     = coda_g_selection,
1280         .vidioc_s_selection     = coda_s_selection,
1281
1282         .vidioc_try_encoder_cmd = coda_try_encoder_cmd,
1283         .vidioc_encoder_cmd     = coda_encoder_cmd,
1284         .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
1285         .vidioc_decoder_cmd     = coda_decoder_cmd,
1286
1287         .vidioc_g_parm          = coda_g_parm,
1288         .vidioc_s_parm          = coda_s_parm,
1289
1290         .vidioc_enum_framesizes = coda_enum_framesizes,
1291         .vidioc_enum_frameintervals = coda_enum_frameintervals,
1292
1293         .vidioc_subscribe_event = coda_subscribe_event,
1294         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1295 };
1296
1297 /*
1298  * Mem-to-mem operations.
1299  */
1300
1301 static void coda_device_run(void *m2m_priv)
1302 {
1303         struct coda_ctx *ctx = m2m_priv;
1304         struct coda_dev *dev = ctx->dev;
1305
1306         queue_work(dev->workqueue, &ctx->pic_run_work);
1307 }
1308
1309 static void coda_pic_run_work(struct work_struct *work)
1310 {
1311         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1312         struct coda_dev *dev = ctx->dev;
1313         int ret;
1314
1315         mutex_lock(&ctx->buffer_mutex);
1316         mutex_lock(&dev->coda_mutex);
1317
1318         ret = ctx->ops->prepare_run(ctx);
1319         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
1320                 mutex_unlock(&dev->coda_mutex);
1321                 mutex_unlock(&ctx->buffer_mutex);
1322                 /* job_finish scheduled by prepare_decode */
1323                 return;
1324         }
1325
1326         if (!wait_for_completion_timeout(&ctx->completion,
1327                                          msecs_to_jiffies(1000))) {
1328                 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
1329
1330                 ctx->hold = true;
1331
1332                 coda_hw_reset(ctx);
1333
1334                 if (ctx->ops->run_timeout)
1335                         ctx->ops->run_timeout(ctx);
1336         } else if (!ctx->aborting) {
1337                 ctx->ops->finish_run(ctx);
1338         }
1339
1340         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1341             ctx->ops->seq_end_work)
1342                 queue_work(dev->workqueue, &ctx->seq_end_work);
1343
1344         mutex_unlock(&dev->coda_mutex);
1345         mutex_unlock(&ctx->buffer_mutex);
1346
1347         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1348 }
1349
1350 static int coda_job_ready(void *m2m_priv)
1351 {
1352         struct coda_ctx *ctx = m2m_priv;
1353         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1354
1355         /*
1356          * For both 'P' and 'key' frame cases 1 picture
1357          * and 1 frame are needed. In the decoder case,
1358          * the compressed frame can be in the bitstream.
1359          */
1360         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1361                 coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1362                 return 0;
1363         }
1364
1365         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1366                 coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1367                 return 0;
1368         }
1369
1370         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1371                 bool stream_end = ctx->bit_stream_param &
1372                                   CODA_BIT_STREAM_END_FLAG;
1373                 int num_metas = ctx->num_metas;
1374                 struct coda_buffer_meta *meta;
1375                 unsigned int count;
1376
1377                 count = hweight32(ctx->frm_dis_flg);
1378                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1379                         coda_dbg(1, ctx,
1380                                  "not ready: all internal buffers in use: %d/%d (0x%x)",
1381                                  count, ctx->num_internal_frames,
1382                                  ctx->frm_dis_flg);
1383                         return 0;
1384                 }
1385
1386                 if (ctx->hold && !src_bufs) {
1387                         coda_dbg(1, ctx,
1388                                  "not ready: on hold for more buffers.\n");
1389                         return 0;
1390                 }
1391
1392                 if (!stream_end && (num_metas + src_bufs) < 2) {
1393                         coda_dbg(1, ctx,
1394                                  "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1395                                  num_metas, src_bufs);
1396                         return 0;
1397                 }
1398
1399                 meta = list_first_entry(&ctx->buffer_meta_list,
1400                                         struct coda_buffer_meta, list);
1401                 if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1402                     !stream_end) {
1403                         coda_dbg(1, ctx,
1404                                  "not ready: not enough bitstream data to read past %u (%u)\n",
1405                                  meta->end, ctx->bitstream_fifo.kfifo.in);
1406                         return 0;
1407                 }
1408         }
1409
1410         if (ctx->aborting) {
1411                 coda_dbg(1, ctx, "not ready: aborting\n");
1412                 return 0;
1413         }
1414
1415         coda_dbg(1, ctx, "job ready\n");
1416
1417         return 1;
1418 }
1419
1420 static void coda_job_abort(void *priv)
1421 {
1422         struct coda_ctx *ctx = priv;
1423
1424         ctx->aborting = 1;
1425
1426         coda_dbg(1, ctx, "job abort\n");
1427 }
1428
1429 static const struct v4l2_m2m_ops coda_m2m_ops = {
1430         .device_run     = coda_device_run,
1431         .job_ready      = coda_job_ready,
1432         .job_abort      = coda_job_abort,
1433 };
1434
1435 static void set_default_params(struct coda_ctx *ctx)
1436 {
1437         unsigned int max_w, max_h, usize, csize;
1438
1439         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1440                                      ctx->cvd->dst_formats[0]);
1441         max_w = min(ctx->codec->max_w, 1920U);
1442         max_h = min(ctx->codec->max_h, 1088U);
1443         usize = max_w * max_h * 3 / 2;
1444         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1445
1446         ctx->params.codec_mode = ctx->codec->mode;
1447         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1448                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1449         else
1450                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1451         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1452         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1453         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1454         ctx->params.framerate = 30;
1455
1456         /* Default formats for output and input queues */
1457         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1458         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1459         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1460         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1461         ctx->q_data[V4L2_M2M_DST].width = max_w;
1462         ctx->q_data[V4L2_M2M_DST].height = max_h;
1463         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1464                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1465                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1466                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1467                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1468         } else {
1469                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1470                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1471                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1472                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1473         }
1474         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1475         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1476         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1477         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1478
1479         /*
1480          * Since the RBC2AXI logic only supports a single chroma plane,
1481          * macroblock tiling only works for to NV12 pixel format.
1482          */
1483         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1484 }
1485
1486 /*
1487  * Queue operations
1488  */
1489 static int coda_queue_setup(struct vb2_queue *vq,
1490                                 unsigned int *nbuffers, unsigned int *nplanes,
1491                                 unsigned int sizes[], struct device *alloc_devs[])
1492 {
1493         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1494         struct coda_q_data *q_data;
1495         unsigned int size;
1496
1497         q_data = get_q_data(ctx, vq->type);
1498         size = q_data->sizeimage;
1499
1500         if (*nplanes)
1501                 return sizes[0] < size ? -EINVAL : 0;
1502
1503         *nplanes = 1;
1504         sizes[0] = size;
1505
1506         coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1507                  size);
1508
1509         return 0;
1510 }
1511
1512 static int coda_buf_prepare(struct vb2_buffer *vb)
1513 {
1514         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1515         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1516         struct coda_q_data *q_data;
1517
1518         q_data = get_q_data(ctx, vb->vb2_queue->type);
1519         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1520                 if (vbuf->field == V4L2_FIELD_ANY)
1521                         vbuf->field = V4L2_FIELD_NONE;
1522                 if (vbuf->field != V4L2_FIELD_NONE) {
1523                         v4l2_warn(&ctx->dev->v4l2_dev,
1524                                   "%s field isn't supported\n", __func__);
1525                         return -EINVAL;
1526                 }
1527         }
1528
1529         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1530                 v4l2_warn(&ctx->dev->v4l2_dev,
1531                           "%s data will not fit into plane (%lu < %lu)\n",
1532                           __func__, vb2_plane_size(vb, 0),
1533                           (long)q_data->sizeimage);
1534                 return -EINVAL;
1535         }
1536
1537         return 0;
1538 }
1539
1540 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1541 {
1542         if (!ctrl)
1543                 return;
1544
1545         v4l2_ctrl_lock(ctrl);
1546
1547         /*
1548          * Extend the control range if the parsed stream contains a known but
1549          * unsupported value or level.
1550          */
1551         if (value > ctrl->maximum) {
1552                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1553                         ctrl->menu_skip_mask & ~(1 << value),
1554                         ctrl->default_value);
1555         } else if (value < ctrl->minimum) {
1556                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1557                         ctrl->menu_skip_mask & ~(1 << value),
1558                         ctrl->default_value);
1559         }
1560
1561         __v4l2_ctrl_s_ctrl(ctrl, value);
1562
1563         v4l2_ctrl_unlock(ctrl);
1564 }
1565
1566 static void coda_update_h264_profile_ctrl(struct coda_ctx *ctx)
1567 {
1568         const char * const *profile_names;
1569         int profile;
1570
1571         profile = coda_h264_profile(ctx->params.h264_profile_idc);
1572         if (profile < 0) {
1573                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid H264 Profile: %u\n",
1574                           ctx->params.h264_profile_idc);
1575                 return;
1576         }
1577
1578         coda_update_menu_ctrl(ctx->h264_profile_ctrl, profile);
1579
1580         profile_names = v4l2_ctrl_get_menu(V4L2_CID_MPEG_VIDEO_H264_PROFILE);
1581
1582         coda_dbg(1, ctx, "Parsed H264 Profile: %s\n", profile_names[profile]);
1583 }
1584
1585 static void coda_update_h264_level_ctrl(struct coda_ctx *ctx)
1586 {
1587         const char * const *level_names;
1588         int level;
1589
1590         level = coda_h264_level(ctx->params.h264_level_idc);
1591         if (level < 0) {
1592                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid H264 Level: %u\n",
1593                           ctx->params.h264_level_idc);
1594                 return;
1595         }
1596
1597         coda_update_menu_ctrl(ctx->h264_level_ctrl, level);
1598
1599         level_names = v4l2_ctrl_get_menu(V4L2_CID_MPEG_VIDEO_H264_LEVEL);
1600
1601         coda_dbg(1, ctx, "Parsed H264 Level: %s\n", level_names[level]);
1602 }
1603
1604 static void coda_buf_queue(struct vb2_buffer *vb)
1605 {
1606         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1607         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1608         struct vb2_queue *vq = vb->vb2_queue;
1609         struct coda_q_data *q_data;
1610
1611         q_data = get_q_data(ctx, vb->vb2_queue->type);
1612
1613         /*
1614          * In the decoder case, immediately try to copy the buffer into the
1615          * bitstream ringbuffer and mark it as ready to be dequeued.
1616          */
1617         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1618                 /*
1619                  * For backwards compatibility, queuing an empty buffer marks
1620                  * the stream end
1621                  */
1622                 if (vb2_get_plane_payload(vb, 0) == 0)
1623                         coda_bit_stream_end_flag(ctx);
1624
1625                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1626                         /*
1627                          * Unless already done, try to obtain profile_idc and
1628                          * level_idc from the SPS header. This allows to decide
1629                          * whether to enable reordering during sequence
1630                          * initialization.
1631                          */
1632                         if (!ctx->params.h264_profile_idc) {
1633                                 coda_sps_parse_profile(ctx, vb);
1634                                 coda_update_h264_profile_ctrl(ctx);
1635                                 coda_update_h264_level_ctrl(ctx);
1636                         }
1637                 }
1638
1639                 mutex_lock(&ctx->bitstream_mutex);
1640                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1641                 if (vb2_is_streaming(vb->vb2_queue))
1642                         /* This set buf->sequence = ctx->qsequence++ */
1643                         coda_fill_bitstream(ctx, NULL);
1644                 mutex_unlock(&ctx->bitstream_mutex);
1645         } else {
1646                 if (ctx->inst_type == CODA_INST_ENCODER &&
1647                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1648                         vbuf->sequence = ctx->qsequence++;
1649                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1650         }
1651 }
1652
1653 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1654                        size_t size, const char *name, struct dentry *parent)
1655 {
1656         buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1657                                         GFP_KERNEL);
1658         if (!buf->vaddr) {
1659                 v4l2_err(&dev->v4l2_dev,
1660                          "Failed to allocate %s buffer of size %zu\n",
1661                          name, size);
1662                 return -ENOMEM;
1663         }
1664
1665         buf->size = size;
1666
1667         if (name && parent) {
1668                 buf->blob.data = buf->vaddr;
1669                 buf->blob.size = size;
1670                 buf->dentry = debugfs_create_blob(name, 0644, parent,
1671                                                   &buf->blob);
1672                 if (!buf->dentry)
1673                         dev_warn(&dev->plat_dev->dev,
1674                                  "failed to create debugfs entry %s\n", name);
1675         }
1676
1677         return 0;
1678 }
1679
1680 void coda_free_aux_buf(struct coda_dev *dev,
1681                        struct coda_aux_buf *buf)
1682 {
1683         if (buf->vaddr) {
1684                 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1685                                   buf->vaddr, buf->paddr);
1686                 buf->vaddr = NULL;
1687                 buf->size = 0;
1688                 debugfs_remove(buf->dentry);
1689                 buf->dentry = NULL;
1690         }
1691 }
1692
1693 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1694 {
1695         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1696         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1697         struct coda_q_data *q_data_src, *q_data_dst;
1698         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1699         struct vb2_v4l2_buffer *buf;
1700         struct list_head list;
1701         int ret = 0;
1702
1703         if (count < 1)
1704                 return -EINVAL;
1705
1706         coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1707
1708         INIT_LIST_HEAD(&list);
1709
1710         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1711         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1712                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1713                         /* copy the buffers that were queued before streamon */
1714                         mutex_lock(&ctx->bitstream_mutex);
1715                         coda_fill_bitstream(ctx, &list);
1716                         mutex_unlock(&ctx->bitstream_mutex);
1717
1718                         if (coda_get_bitstream_payload(ctx) < 512) {
1719                                 ret = -EINVAL;
1720                                 goto err;
1721                         }
1722                 }
1723
1724                 ctx->streamon_out = 1;
1725         } else {
1726                 ctx->streamon_cap = 1;
1727         }
1728
1729         /* Don't start the coda unless both queues are on */
1730         if (!(ctx->streamon_out && ctx->streamon_cap))
1731                 goto out;
1732
1733         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1734         if ((q_data_src->rect.width != q_data_dst->width &&
1735              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
1736             (q_data_src->rect.height != q_data_dst->height &&
1737              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
1738                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1739                          q_data_src->rect.width, q_data_src->rect.height,
1740                          q_data_dst->width, q_data_dst->height);
1741                 ret = -EINVAL;
1742                 goto err;
1743         }
1744
1745         /* Allow BIT decoder device_run with no new buffers queued */
1746         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1747                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1748
1749         ctx->gopcounter = ctx->params.gop_size - 1;
1750
1751         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1752                 ctx->params.gop_size = 1;
1753         ctx->gopcounter = ctx->params.gop_size - 1;
1754
1755         ret = ctx->ops->start_streaming(ctx);
1756         if (ctx->inst_type == CODA_INST_DECODER) {
1757                 if (ret == -EAGAIN)
1758                         goto out;
1759         }
1760         if (ret < 0)
1761                 goto err;
1762
1763 out:
1764         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1765                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1766                         list_del(&m2m_buf->list);
1767                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
1768                 }
1769         }
1770         return 0;
1771
1772 err:
1773         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1774                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1775                         list_del(&m2m_buf->list);
1776                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
1777                 }
1778                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1779                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1780         } else {
1781                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1782                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1783         }
1784         return ret;
1785 }
1786
1787 static void coda_stop_streaming(struct vb2_queue *q)
1788 {
1789         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1790         struct coda_dev *dev = ctx->dev;
1791         struct vb2_v4l2_buffer *buf;
1792         bool stop;
1793
1794         stop = ctx->streamon_out && ctx->streamon_cap;
1795
1796         coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
1797
1798         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1799                 ctx->streamon_out = 0;
1800
1801                 coda_bit_stream_end_flag(ctx);
1802
1803                 ctx->qsequence = 0;
1804
1805                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1806                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1807         } else {
1808                 ctx->streamon_cap = 0;
1809
1810                 ctx->osequence = 0;
1811                 ctx->sequence_offset = 0;
1812
1813                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1814                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1815         }
1816
1817         if (stop) {
1818                 struct coda_buffer_meta *meta;
1819
1820                 if (ctx->ops->seq_end_work) {
1821                         queue_work(dev->workqueue, &ctx->seq_end_work);
1822                         flush_work(&ctx->seq_end_work);
1823                 }
1824                 spin_lock(&ctx->buffer_meta_lock);
1825                 while (!list_empty(&ctx->buffer_meta_list)) {
1826                         meta = list_first_entry(&ctx->buffer_meta_list,
1827                                                 struct coda_buffer_meta, list);
1828                         list_del(&meta->list);
1829                         kfree(meta);
1830                 }
1831                 ctx->num_metas = 0;
1832                 spin_unlock(&ctx->buffer_meta_lock);
1833                 kfifo_init(&ctx->bitstream_fifo,
1834                         ctx->bitstream.vaddr, ctx->bitstream.size);
1835                 ctx->runcounter = 0;
1836                 ctx->aborting = 0;
1837                 ctx->hold = false;
1838         }
1839
1840         if (!ctx->streamon_out && !ctx->streamon_cap)
1841                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1842 }
1843
1844 static const struct vb2_ops coda_qops = {
1845         .queue_setup            = coda_queue_setup,
1846         .buf_prepare            = coda_buf_prepare,
1847         .buf_queue              = coda_buf_queue,
1848         .start_streaming        = coda_start_streaming,
1849         .stop_streaming         = coda_stop_streaming,
1850         .wait_prepare           = vb2_ops_wait_prepare,
1851         .wait_finish            = vb2_ops_wait_finish,
1852 };
1853
1854 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1855 {
1856         struct coda_ctx *ctx =
1857                         container_of(ctrl->handler, struct coda_ctx, ctrls);
1858
1859         coda_dbg(1, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
1860                  ctrl->id, ctrl->name, ctrl->val);
1861
1862         switch (ctrl->id) {
1863         case V4L2_CID_HFLIP:
1864                 if (ctrl->val)
1865                         ctx->params.rot_mode |= CODA_MIR_HOR;
1866                 else
1867                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
1868                 break;
1869         case V4L2_CID_VFLIP:
1870                 if (ctrl->val)
1871                         ctx->params.rot_mode |= CODA_MIR_VER;
1872                 else
1873                         ctx->params.rot_mode &= ~CODA_MIR_VER;
1874                 break;
1875         case V4L2_CID_MPEG_VIDEO_BITRATE:
1876                 ctx->params.bitrate = ctrl->val / 1000;
1877                 break;
1878         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1879                 ctx->params.gop_size = ctrl->val;
1880                 break;
1881         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1882                 ctx->params.h264_intra_qp = ctrl->val;
1883                 break;
1884         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1885                 ctx->params.h264_inter_qp = ctrl->val;
1886                 break;
1887         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1888                 ctx->params.h264_min_qp = ctrl->val;
1889                 break;
1890         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1891                 ctx->params.h264_max_qp = ctrl->val;
1892                 break;
1893         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1894                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
1895                 break;
1896         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1897                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
1898                 break;
1899         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1900                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
1901                 break;
1902         case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
1903                 ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
1904                 break;
1905         case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
1906                 ctx->params.h264_chroma_qp_index_offset = ctrl->val;
1907                 break;
1908         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
1909                 /* TODO: switch between baseline and constrained baseline */
1910                 if (ctx->inst_type == CODA_INST_ENCODER)
1911                         ctx->params.h264_profile_idc = 66;
1912                 break;
1913         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
1914                 /* nothing to do, this is set by the encoder */
1915                 break;
1916         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1917                 ctx->params.mpeg4_intra_qp = ctrl->val;
1918                 break;
1919         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1920                 ctx->params.mpeg4_inter_qp = ctrl->val;
1921                 break;
1922         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
1923         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
1924                 /* nothing to do, these are fixed */
1925                 break;
1926         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1927                 ctx->params.slice_mode = ctrl->val;
1928                 break;
1929         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1930                 ctx->params.slice_max_mb = ctrl->val;
1931                 break;
1932         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1933                 ctx->params.slice_max_bits = ctrl->val * 8;
1934                 break;
1935         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1936                 break;
1937         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1938                 ctx->params.intra_refresh = ctrl->val;
1939                 break;
1940         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
1941                 ctx->params.force_ipicture = true;
1942                 break;
1943         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1944                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1945                 break;
1946         case V4L2_CID_JPEG_RESTART_INTERVAL:
1947                 ctx->params.jpeg_restart_interval = ctrl->val;
1948                 break;
1949         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1950                 ctx->params.vbv_delay = ctrl->val;
1951                 break;
1952         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1953                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1954                 break;
1955         default:
1956                 coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
1957                          ctrl->id, ctrl->val);
1958                 return -EINVAL;
1959         }
1960
1961         return 0;
1962 }
1963
1964 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1965         .s_ctrl = coda_s_ctrl,
1966 };
1967
1968 static void coda_encode_ctrls(struct coda_ctx *ctx)
1969 {
1970         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
1971
1972         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1973                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1974         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1975                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
1976         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1977                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1978         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1979                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1980         if (ctx->dev->devtype->product != CODA_960) {
1981                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1982                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1983         }
1984         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1985                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1986         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1987                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
1988         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1989                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
1990         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1991                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1992                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
1993                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1994         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1995                 V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
1996                 0);
1997         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1998                 V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
1999         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2000                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2001                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,
2002                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
2003         if (ctx->dev->devtype->product == CODA_HX4 ||
2004             ctx->dev->devtype->product == CODA_7541) {
2005                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2006                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2007                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2008                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2009                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2010                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2011                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2012         }
2013         if (ctx->dev->devtype->product == CODA_960) {
2014                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2015                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2016                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
2017                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2018                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2019                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2020                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2021                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
2022                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
2023         }
2024         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2025                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2026         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2027                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2028         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2029                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2030                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
2031                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
2032         if (ctx->dev->devtype->product == CODA_HX4 ||
2033             ctx->dev->devtype->product == CODA_7541 ||
2034             ctx->dev->devtype->product == CODA_960) {
2035                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2036                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2037                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
2038                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
2039                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2040         }
2041         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2042                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2043                 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
2044                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2045         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2046                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2047         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2048                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
2049                 500);
2050         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2051                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2052                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2053                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2054                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2055         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2056                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
2057                 1920 * 1088 / 256, 1, 0);
2058         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2059                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
2060         /*
2061          * The maximum VBV size value is 0x7fffffff bits,
2062          * one bit less than 262144 KiB
2063          */
2064         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2065                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
2066 }
2067
2068 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
2069 {
2070         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2071                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
2072         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2073                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
2074 }
2075
2076 static void coda_decode_ctrls(struct coda_ctx *ctx)
2077 {
2078         u8 max;
2079
2080         ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2081                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2082                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
2083                 ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
2084                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
2085                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
2086                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
2087         if (ctx->h264_profile_ctrl)
2088                 ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2089
2090         if (ctx->dev->devtype->product == CODA_HX4 ||
2091             ctx->dev->devtype->product == CODA_7541)
2092                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
2093         else if (ctx->dev->devtype->product == CODA_960)
2094                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
2095         else
2096                 return;
2097         ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2098                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, 0, max);
2099         if (ctx->h264_level_ctrl)
2100                 ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2101 }
2102
2103 static int coda_ctrls_setup(struct coda_ctx *ctx)
2104 {
2105         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2106
2107         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2108                 V4L2_CID_HFLIP, 0, 1, 1, 0);
2109         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2110                 V4L2_CID_VFLIP, 0, 1, 1, 0);
2111         if (ctx->inst_type == CODA_INST_ENCODER) {
2112                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2113                                   V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
2114                                   1, 1, 1, 1);
2115                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2116                         coda_jpeg_encode_ctrls(ctx);
2117                 else
2118                         coda_encode_ctrls(ctx);
2119         } else {
2120                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2121                                   V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
2122                                   1, 1, 1, 1);
2123                 if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2124                         coda_decode_ctrls(ctx);
2125         }
2126
2127         if (ctx->ctrls.error) {
2128                 v4l2_err(&ctx->dev->v4l2_dev,
2129                         "control initialization error (%d)",
2130                         ctx->ctrls.error);
2131                 return -EINVAL;
2132         }
2133
2134         return v4l2_ctrl_handler_setup(&ctx->ctrls);
2135 }
2136
2137 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2138 {
2139         vq->drv_priv = ctx;
2140         vq->ops = &coda_qops;
2141         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2142         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2143         vq->lock = &ctx->dev->dev_mutex;
2144         /* One way to indicate end-of-stream for coda is to set the
2145          * bytesused == 0. However by default videobuf2 handles bytesused
2146          * equal to 0 as a special case and changes its value to the size
2147          * of the buffer. Set the allow_zero_bytesused flag, so
2148          * that videobuf2 will keep the value of bytesused intact.
2149          */
2150         vq->allow_zero_bytesused = 1;
2151         /*
2152          * We might be fine with no buffers on some of the queues, but that
2153          * would need to be reflected in job_ready(). Currently we expect all
2154          * queues to have at least one buffer queued.
2155          */
2156         vq->min_buffers_needed = 1;
2157         vq->dev = &ctx->dev->plat_dev->dev;
2158
2159         return vb2_queue_init(vq);
2160 }
2161
2162 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2163                             struct vb2_queue *dst_vq)
2164 {
2165         int ret;
2166
2167         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2168         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2169         src_vq->mem_ops = &vb2_dma_contig_memops;
2170
2171         ret = coda_queue_init(priv, src_vq);
2172         if (ret)
2173                 return ret;
2174
2175         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2176         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2177         dst_vq->mem_ops = &vb2_dma_contig_memops;
2178
2179         return coda_queue_init(priv, dst_vq);
2180 }
2181
2182 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2183                             struct vb2_queue *dst_vq)
2184 {
2185         int ret;
2186
2187         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2188         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2189         src_vq->mem_ops = &vb2_vmalloc_memops;
2190
2191         ret = coda_queue_init(priv, src_vq);
2192         if (ret)
2193                 return ret;
2194
2195         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2196         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2197         dst_vq->mem_ops = &vb2_dma_contig_memops;
2198
2199         return coda_queue_init(priv, dst_vq);
2200 }
2201
2202 /*
2203  * File operations
2204  */
2205
2206 static int coda_open(struct file *file)
2207 {
2208         struct video_device *vdev = video_devdata(file);
2209         struct coda_dev *dev = video_get_drvdata(vdev);
2210         struct coda_ctx *ctx;
2211         unsigned int max = ~0;
2212         char *name;
2213         int ret;
2214         int idx;
2215
2216         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2217         if (!ctx)
2218                 return -ENOMEM;
2219
2220         if (dev->devtype->product == CODA_DX6)
2221                 max = CODADX6_MAX_INSTANCES - 1;
2222         idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2223         if (idx < 0) {
2224                 ret = idx;
2225                 goto err_coda_max;
2226         }
2227
2228         name = kasprintf(GFP_KERNEL, "context%d", idx);
2229         if (!name) {
2230                 ret = -ENOMEM;
2231                 goto err_coda_name_init;
2232         }
2233
2234         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2235         kfree(name);
2236
2237         ctx->cvd = to_coda_video_device(vdev);
2238         ctx->inst_type = ctx->cvd->type;
2239         ctx->ops = ctx->cvd->ops;
2240         ctx->use_bit = !ctx->cvd->direct;
2241         init_completion(&ctx->completion);
2242         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2243         if (ctx->ops->seq_end_work)
2244                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2245         v4l2_fh_init(&ctx->fh, video_devdata(file));
2246         file->private_data = &ctx->fh;
2247         v4l2_fh_add(&ctx->fh);
2248         ctx->dev = dev;
2249         ctx->idx = idx;
2250
2251         coda_dbg(1, ctx, "open instance (%p)\n", ctx);
2252
2253         switch (dev->devtype->product) {
2254         case CODA_960:
2255                 /*
2256                  * Enabling the BWB when decoding can hang the firmware with
2257                  * certain streams. The issue was tracked as ENGR00293425 by
2258                  * Freescale. As a workaround, disable BWB for all decoders.
2259                  * The enable_bwb module parameter allows to override this.
2260                  */
2261                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2262                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2263                 /* fallthrough */
2264         case CODA_HX4:
2265         case CODA_7541:
2266                 ctx->reg_idx = 0;
2267                 break;
2268         default:
2269                 ctx->reg_idx = idx;
2270         }
2271         if (ctx->dev->vdoa && !disable_vdoa) {
2272                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2273                 if (!ctx->vdoa)
2274                         v4l2_warn(&dev->v4l2_dev,
2275                                   "Failed to create vdoa context: not using vdoa");
2276         }
2277         ctx->use_vdoa = false;
2278
2279         /* Power up and upload firmware if necessary */
2280         ret = pm_runtime_get_sync(&dev->plat_dev->dev);
2281         if (ret < 0) {
2282                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2283                 goto err_pm_get;
2284         }
2285
2286         ret = clk_prepare_enable(dev->clk_per);
2287         if (ret)
2288                 goto err_clk_per;
2289
2290         ret = clk_prepare_enable(dev->clk_ahb);
2291         if (ret)
2292                 goto err_clk_ahb;
2293
2294         set_default_params(ctx);
2295         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2296                                             ctx->ops->queue_init);
2297         if (IS_ERR(ctx->fh.m2m_ctx)) {
2298                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2299
2300                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2301                          __func__, ret);
2302                 goto err_ctx_init;
2303         }
2304
2305         ret = coda_ctrls_setup(ctx);
2306         if (ret) {
2307                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2308                 goto err_ctrls_setup;
2309         }
2310
2311         ctx->fh.ctrl_handler = &ctx->ctrls;
2312
2313         mutex_init(&ctx->bitstream_mutex);
2314         mutex_init(&ctx->buffer_mutex);
2315         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2316         spin_lock_init(&ctx->buffer_meta_lock);
2317
2318         return 0;
2319
2320 err_ctrls_setup:
2321         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2322 err_ctx_init:
2323         clk_disable_unprepare(dev->clk_ahb);
2324 err_clk_ahb:
2325         clk_disable_unprepare(dev->clk_per);
2326 err_clk_per:
2327         pm_runtime_put_sync(&dev->plat_dev->dev);
2328 err_pm_get:
2329         v4l2_fh_del(&ctx->fh);
2330         v4l2_fh_exit(&ctx->fh);
2331 err_coda_name_init:
2332         ida_free(&dev->ida, ctx->idx);
2333 err_coda_max:
2334         kfree(ctx);
2335         return ret;
2336 }
2337
2338 static int coda_release(struct file *file)
2339 {
2340         struct coda_dev *dev = video_drvdata(file);
2341         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2342
2343         coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2344
2345         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2346                 coda_bit_stream_end_flag(ctx);
2347
2348         /* If this instance is running, call .job_abort and wait for it to end */
2349         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2350
2351         if (ctx->vdoa)
2352                 vdoa_context_destroy(ctx->vdoa);
2353
2354         /* In case the instance was not running, we still need to call SEQ_END */
2355         if (ctx->ops->seq_end_work) {
2356                 queue_work(dev->workqueue, &ctx->seq_end_work);
2357                 flush_work(&ctx->seq_end_work);
2358         }
2359
2360         if (ctx->dev->devtype->product == CODA_DX6)
2361                 coda_free_aux_buf(dev, &ctx->workbuf);
2362
2363         v4l2_ctrl_handler_free(&ctx->ctrls);
2364         clk_disable_unprepare(dev->clk_ahb);
2365         clk_disable_unprepare(dev->clk_per);
2366         pm_runtime_put_sync(&dev->plat_dev->dev);
2367         v4l2_fh_del(&ctx->fh);
2368         v4l2_fh_exit(&ctx->fh);
2369         ida_free(&dev->ida, ctx->idx);
2370         if (ctx->ops->release)
2371                 ctx->ops->release(ctx);
2372         debugfs_remove_recursive(ctx->debugfs_entry);
2373         kfree(ctx);
2374
2375         return 0;
2376 }
2377
2378 static const struct v4l2_file_operations coda_fops = {
2379         .owner          = THIS_MODULE,
2380         .open           = coda_open,
2381         .release        = coda_release,
2382         .poll           = v4l2_m2m_fop_poll,
2383         .unlocked_ioctl = video_ioctl2,
2384         .mmap           = v4l2_m2m_fop_mmap,
2385 };
2386
2387 static int coda_hw_init(struct coda_dev *dev)
2388 {
2389         u32 data;
2390         u16 *p;
2391         int i, ret;
2392
2393         ret = clk_prepare_enable(dev->clk_per);
2394         if (ret)
2395                 goto err_clk_per;
2396
2397         ret = clk_prepare_enable(dev->clk_ahb);
2398         if (ret)
2399                 goto err_clk_ahb;
2400
2401         reset_control_reset(dev->rstc);
2402
2403         /*
2404          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2405          * The 16-bit chars in the code buffer are in memory access
2406          * order, re-sort them to CODA order for register download.
2407          * Data in this SRAM survives a reboot.
2408          */
2409         p = (u16 *)dev->codebuf.vaddr;
2410         if (dev->devtype->product == CODA_DX6) {
2411                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2412                         data = CODA_DOWN_ADDRESS_SET(i) |
2413                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2414                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2415                 }
2416         } else {
2417                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2418                         data = CODA_DOWN_ADDRESS_SET(i) |
2419                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2420                                                         3 - (i % 4)]);
2421                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2422                 }
2423         }
2424
2425         /* Clear registers */
2426         for (i = 0; i < 64; i++)
2427                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2428
2429         /* Tell the BIT where to find everything it needs */
2430         if (dev->devtype->product == CODA_960 ||
2431             dev->devtype->product == CODA_7541 ||
2432             dev->devtype->product == CODA_HX4) {
2433                 coda_write(dev, dev->tempbuf.paddr,
2434                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2435                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2436         } else {
2437                 coda_write(dev, dev->workbuf.paddr,
2438                               CODA_REG_BIT_WORK_BUF_ADDR);
2439         }
2440         coda_write(dev, dev->codebuf.paddr,
2441                       CODA_REG_BIT_CODE_BUF_ADDR);
2442         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2443
2444         /* Set default values */
2445         switch (dev->devtype->product) {
2446         case CODA_DX6:
2447                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2448                            CODA_REG_BIT_STREAM_CTRL);
2449                 break;
2450         default:
2451                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2452                            CODA_REG_BIT_STREAM_CTRL);
2453         }
2454         if (dev->devtype->product == CODA_960)
2455                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2456                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2457         else
2458                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2459
2460         if (dev->devtype->product != CODA_DX6)
2461                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2462
2463         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2464                       CODA_REG_BIT_INT_ENABLE);
2465
2466         /* Reset VPU and start processor */
2467         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2468         data |= CODA_REG_RESET_ENABLE;
2469         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2470         udelay(10);
2471         data &= ~CODA_REG_RESET_ENABLE;
2472         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2473         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2474
2475         clk_disable_unprepare(dev->clk_ahb);
2476         clk_disable_unprepare(dev->clk_per);
2477
2478         return 0;
2479
2480 err_clk_ahb:
2481         clk_disable_unprepare(dev->clk_per);
2482 err_clk_per:
2483         return ret;
2484 }
2485
2486 static int coda_register_device(struct coda_dev *dev, int i)
2487 {
2488         struct video_device *vfd = &dev->vfd[i];
2489
2490         if (i >= dev->devtype->num_vdevs)
2491                 return -EINVAL;
2492
2493         strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2494         vfd->fops       = &coda_fops;
2495         vfd->ioctl_ops  = &coda_ioctl_ops;
2496         vfd->release    = video_device_release_empty,
2497         vfd->lock       = &dev->dev_mutex;
2498         vfd->v4l2_dev   = &dev->v4l2_dev;
2499         vfd->vfl_dir    = VFL_DIR_M2M;
2500         video_set_drvdata(vfd, dev);
2501
2502         /* Not applicable, use the selection API instead */
2503         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2504         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2505         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2506
2507         return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
2508 }
2509
2510 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2511                                size_t size)
2512 {
2513         u32 *src = (u32 *)buf;
2514
2515         /* Check if the firmware has a 16-byte Freescale header, skip it */
2516         if (buf[0] == 'M' && buf[1] == 'X')
2517                 src += 4;
2518         /*
2519          * Check whether the firmware is in native order or pre-reordered for
2520          * memory access. The first instruction opcode always is 0xe40e.
2521          */
2522         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2523                 u32 *dst = dev->codebuf.vaddr;
2524                 int i;
2525
2526                 /* Firmware in native order, reorder while copying */
2527                 if (dev->devtype->product == CODA_DX6) {
2528                         for (i = 0; i < (size - 16) / 4; i++)
2529                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2530                 } else {
2531                         for (i = 0; i < (size - 16) / 4; i += 2) {
2532                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2533                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2534                         }
2535                 }
2536         } else {
2537                 /* Copy the already reordered firmware image */
2538                 memcpy(dev->codebuf.vaddr, src, size);
2539         }
2540 }
2541
2542 static void coda_fw_callback(const struct firmware *fw, void *context);
2543
2544 static int coda_firmware_request(struct coda_dev *dev)
2545 {
2546         char *fw;
2547
2548         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2549                 return -EINVAL;
2550
2551         fw = dev->devtype->firmware[dev->firmware];
2552
2553         dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2554                 coda_product_name(dev->devtype->product));
2555
2556         return request_firmware_nowait(THIS_MODULE, true, fw,
2557                                        &dev->plat_dev->dev, GFP_KERNEL, dev,
2558                                        coda_fw_callback);
2559 }
2560
2561 static void coda_fw_callback(const struct firmware *fw, void *context)
2562 {
2563         struct coda_dev *dev = context;
2564         struct platform_device *pdev = dev->plat_dev;
2565         int i, ret;
2566
2567         if (!fw) {
2568                 dev->firmware++;
2569                 ret = coda_firmware_request(dev);
2570                 if (ret < 0) {
2571                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2572                         goto put_pm;
2573                 }
2574                 return;
2575         }
2576         if (dev->firmware > 0) {
2577                 /*
2578                  * Since we can't suppress warnings for failed asynchronous
2579                  * firmware requests, report that the fallback firmware was
2580                  * found.
2581                  */
2582                 dev_info(&pdev->dev, "Using fallback firmware %s\n",
2583                          dev->devtype->firmware[dev->firmware]);
2584         }
2585
2586         /* allocate auxiliary per-device code buffer for the BIT processor */
2587         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2588                                  dev->debugfs_root);
2589         if (ret < 0)
2590                 goto put_pm;
2591
2592         coda_copy_firmware(dev, fw->data, fw->size);
2593         release_firmware(fw);
2594
2595         ret = coda_hw_init(dev);
2596         if (ret < 0) {
2597                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2598                 goto put_pm;
2599         }
2600
2601         ret = coda_check_firmware(dev);
2602         if (ret < 0)
2603                 goto put_pm;
2604
2605         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
2606         if (IS_ERR(dev->m2m_dev)) {
2607                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
2608                 goto put_pm;
2609         }
2610
2611         for (i = 0; i < dev->devtype->num_vdevs; i++) {
2612                 ret = coda_register_device(dev, i);
2613                 if (ret) {
2614                         v4l2_err(&dev->v4l2_dev,
2615                                  "Failed to register %s video device: %d\n",
2616                                  dev->devtype->vdevs[i]->name, ret);
2617                         goto rel_vfd;
2618                 }
2619         }
2620
2621         v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2622                   dev->vfd[0].num, dev->vfd[i - 1].num);
2623
2624         pm_runtime_put_sync(&pdev->dev);
2625         return;
2626
2627 rel_vfd:
2628         while (--i >= 0)
2629                 video_unregister_device(&dev->vfd[i]);
2630         v4l2_m2m_release(dev->m2m_dev);
2631 put_pm:
2632         pm_runtime_put_sync(&pdev->dev);
2633 }
2634
2635 enum coda_platform {
2636         CODA_IMX27,
2637         CODA_IMX51,
2638         CODA_IMX53,
2639         CODA_IMX6Q,
2640         CODA_IMX6DL,
2641 };
2642
2643 static const struct coda_devtype coda_devdata[] = {
2644         [CODA_IMX27] = {
2645                 .firmware     = {
2646                         "vpu_fw_imx27_TO2.bin",
2647                         "vpu/vpu_fw_imx27_TO2.bin",
2648                         "v4l-codadx6-imx27.bin"
2649                 },
2650                 .product      = CODA_DX6,
2651                 .codecs       = codadx6_codecs,
2652                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
2653                 .vdevs        = codadx6_video_devices,
2654                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
2655                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2656                 .iram_size    = 0xb000,
2657         },
2658         [CODA_IMX51] = {
2659                 .firmware     = {
2660                         "vpu_fw_imx51.bin",
2661                         "vpu/vpu_fw_imx51.bin",
2662                         "v4l-codahx4-imx51.bin"
2663                 },
2664                 .product      = CODA_HX4,
2665                 .codecs       = codahx4_codecs,
2666                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
2667                 .vdevs        = codahx4_video_devices,
2668                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
2669                 .workbuf_size = 128 * 1024,
2670                 .tempbuf_size = 304 * 1024,
2671                 .iram_size    = 0x14000,
2672         },
2673         [CODA_IMX53] = {
2674                 .firmware     = {
2675                         "vpu_fw_imx53.bin",
2676                         "vpu/vpu_fw_imx53.bin",
2677                         "v4l-coda7541-imx53.bin"
2678                 },
2679                 .product      = CODA_7541,
2680                 .codecs       = coda7_codecs,
2681                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
2682                 .vdevs        = coda7_video_devices,
2683                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
2684                 .workbuf_size = 128 * 1024,
2685                 .tempbuf_size = 304 * 1024,
2686                 .iram_size    = 0x14000,
2687         },
2688         [CODA_IMX6Q] = {
2689                 .firmware     = {
2690                         "vpu_fw_imx6q.bin",
2691                         "vpu/vpu_fw_imx6q.bin",
2692                         "v4l-coda960-imx6q.bin"
2693                 },
2694                 .product      = CODA_960,
2695                 .codecs       = coda9_codecs,
2696                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2697                 .vdevs        = coda9_video_devices,
2698                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2699                 .workbuf_size = 80 * 1024,
2700                 .tempbuf_size = 204 * 1024,
2701                 .iram_size    = 0x21000,
2702         },
2703         [CODA_IMX6DL] = {
2704                 .firmware     = {
2705                         "vpu_fw_imx6d.bin",
2706                         "vpu/vpu_fw_imx6d.bin",
2707                         "v4l-coda960-imx6dl.bin"
2708                 },
2709                 .product      = CODA_960,
2710                 .codecs       = coda9_codecs,
2711                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2712                 .vdevs        = coda9_video_devices,
2713                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2714                 .workbuf_size = 80 * 1024,
2715                 .tempbuf_size = 204 * 1024,
2716                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
2717         },
2718 };
2719
2720 static const struct platform_device_id coda_platform_ids[] = {
2721         { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2722         { /* sentinel */ }
2723 };
2724 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2725
2726 #ifdef CONFIG_OF
2727 static const struct of_device_id coda_dt_ids[] = {
2728         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2729         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
2730         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2731         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2732         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2733         { /* sentinel */ }
2734 };
2735 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2736 #endif
2737
2738 static int coda_probe(struct platform_device *pdev)
2739 {
2740         const struct of_device_id *of_id =
2741                         of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2742         const struct platform_device_id *pdev_id;
2743         struct coda_platform_data *pdata = pdev->dev.platform_data;
2744         struct device_node *np = pdev->dev.of_node;
2745         struct gen_pool *pool;
2746         struct coda_dev *dev;
2747         struct resource *res;
2748         int ret, irq;
2749
2750         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2751         if (!dev)
2752                 return -ENOMEM;
2753
2754         pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2755
2756         if (of_id)
2757                 dev->devtype = of_id->data;
2758         else if (pdev_id)
2759                 dev->devtype = &coda_devdata[pdev_id->driver_data];
2760         else
2761                 return -EINVAL;
2762
2763         spin_lock_init(&dev->irqlock);
2764
2765         dev->plat_dev = pdev;
2766         dev->clk_per = devm_clk_get(&pdev->dev, "per");
2767         if (IS_ERR(dev->clk_per)) {
2768                 dev_err(&pdev->dev, "Could not get per clock\n");
2769                 return PTR_ERR(dev->clk_per);
2770         }
2771
2772         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2773         if (IS_ERR(dev->clk_ahb)) {
2774                 dev_err(&pdev->dev, "Could not get ahb clock\n");
2775                 return PTR_ERR(dev->clk_ahb);
2776         }
2777
2778         /* Get  memory for physical registers */
2779         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2780         dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2781         if (IS_ERR(dev->regs_base))
2782                 return PTR_ERR(dev->regs_base);
2783
2784         /* IRQ */
2785         irq = platform_get_irq_byname(pdev, "bit");
2786         if (irq < 0)
2787                 irq = platform_get_irq(pdev, 0);
2788         if (irq < 0) {
2789                 dev_err(&pdev->dev, "failed to get irq resource\n");
2790                 return irq;
2791         }
2792
2793         ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2794                         IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2795         if (ret < 0) {
2796                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2797                 return ret;
2798         }
2799
2800         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
2801                                                               NULL);
2802         if (IS_ERR(dev->rstc)) {
2803                 ret = PTR_ERR(dev->rstc);
2804                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
2805                 return ret;
2806         }
2807
2808         /* Get IRAM pool from device tree or platform data */
2809         pool = of_gen_pool_get(np, "iram", 0);
2810         if (!pool && pdata)
2811                 pool = gen_pool_get(pdata->iram_dev, NULL);
2812         if (!pool) {
2813                 dev_err(&pdev->dev, "iram pool not available\n");
2814                 return -ENOMEM;
2815         }
2816         dev->iram_pool = pool;
2817
2818         /* Get vdoa_data if supported by the platform */
2819         dev->vdoa = coda_get_vdoa_data();
2820         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
2821                 return -EPROBE_DEFER;
2822
2823         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2824         if (ret)
2825                 return ret;
2826
2827         mutex_init(&dev->dev_mutex);
2828         mutex_init(&dev->coda_mutex);
2829         ida_init(&dev->ida);
2830
2831         dev->debugfs_root = debugfs_create_dir("coda", NULL);
2832         if (!dev->debugfs_root)
2833                 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2834
2835         /* allocate auxiliary per-device buffers for the BIT processor */
2836         if (dev->devtype->product == CODA_DX6) {
2837                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2838                                          dev->devtype->workbuf_size, "workbuf",
2839                                          dev->debugfs_root);
2840                 if (ret < 0)
2841                         goto err_v4l2_register;
2842         }
2843
2844         if (dev->devtype->tempbuf_size) {
2845                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2846                                          dev->devtype->tempbuf_size, "tempbuf",
2847                                          dev->debugfs_root);
2848                 if (ret < 0)
2849                         goto err_v4l2_register;
2850         }
2851
2852         dev->iram.size = dev->devtype->iram_size;
2853         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2854                                              &dev->iram.paddr);
2855         if (!dev->iram.vaddr) {
2856                 dev_warn(&pdev->dev, "unable to alloc iram\n");
2857         } else {
2858                 memset(dev->iram.vaddr, 0, dev->iram.size);
2859                 dev->iram.blob.data = dev->iram.vaddr;
2860                 dev->iram.blob.size = dev->iram.size;
2861                 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2862                                                        dev->debugfs_root,
2863                                                        &dev->iram.blob);
2864         }
2865
2866         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2867         if (!dev->workqueue) {
2868                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2869                 ret = -ENOMEM;
2870                 goto err_v4l2_register;
2871         }
2872
2873         platform_set_drvdata(pdev, dev);
2874
2875         /*
2876          * Start activated so we can directly call coda_hw_init in
2877          * coda_fw_callback regardless of whether CONFIG_PM is
2878          * enabled or whether the device is associated with a PM domain.
2879          */
2880         pm_runtime_get_noresume(&pdev->dev);
2881         pm_runtime_set_active(&pdev->dev);
2882         pm_runtime_enable(&pdev->dev);
2883
2884         ret = coda_firmware_request(dev);
2885         if (ret)
2886                 goto err_alloc_workqueue;
2887         return 0;
2888
2889 err_alloc_workqueue:
2890         destroy_workqueue(dev->workqueue);
2891 err_v4l2_register:
2892         v4l2_device_unregister(&dev->v4l2_dev);
2893         return ret;
2894 }
2895
2896 static int coda_remove(struct platform_device *pdev)
2897 {
2898         struct coda_dev *dev = platform_get_drvdata(pdev);
2899         int i;
2900
2901         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2902                 if (video_get_drvdata(&dev->vfd[i]))
2903                         video_unregister_device(&dev->vfd[i]);
2904         }
2905         if (dev->m2m_dev)
2906                 v4l2_m2m_release(dev->m2m_dev);
2907         pm_runtime_disable(&pdev->dev);
2908         v4l2_device_unregister(&dev->v4l2_dev);
2909         destroy_workqueue(dev->workqueue);
2910         if (dev->iram.vaddr)
2911                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2912                               dev->iram.size);
2913         coda_free_aux_buf(dev, &dev->codebuf);
2914         coda_free_aux_buf(dev, &dev->tempbuf);
2915         coda_free_aux_buf(dev, &dev->workbuf);
2916         debugfs_remove_recursive(dev->debugfs_root);
2917         ida_destroy(&dev->ida);
2918         return 0;
2919 }
2920
2921 #ifdef CONFIG_PM
2922 static int coda_runtime_resume(struct device *dev)
2923 {
2924         struct coda_dev *cdev = dev_get_drvdata(dev);
2925         int ret = 0;
2926
2927         if (dev->pm_domain && cdev->codebuf.vaddr) {
2928                 ret = coda_hw_init(cdev);
2929                 if (ret)
2930                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2931         }
2932
2933         return ret;
2934 }
2935 #endif
2936
2937 static const struct dev_pm_ops coda_pm_ops = {
2938         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2939 };
2940
2941 static struct platform_driver coda_driver = {
2942         .probe  = coda_probe,
2943         .remove = coda_remove,
2944         .driver = {
2945                 .name   = CODA_NAME,
2946                 .of_match_table = of_match_ptr(coda_dt_ids),
2947                 .pm     = &coda_pm_ops,
2948         },
2949         .id_table = coda_platform_ids,
2950 };
2951
2952 module_platform_driver(coda_driver);
2953
2954 MODULE_LICENSE("GPL");
2955 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2956 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");