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, <[email protected]>
   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/ratelimit.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(3, 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(3, 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_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 159         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 160         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 161         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 162         CODA_CODEC(CODA9_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 163 };
 164
 165 struct coda_video_device {
 166         const char *name;
 167         enum coda_inst_type type;
 168         const struct coda_context_ops *ops;
 169         bool direct;
 170         u32 src_formats[CODA_MAX_FORMATS];
 171         u32 dst_formats[CODA_MAX_FORMATS];
 172 };
 173
 174 static const struct coda_video_device coda_bit_encoder = {
 175         .name = "coda-video-encoder",
 176         .type = CODA_INST_ENCODER,
 177         .ops = &coda_bit_encode_ops,
 178         .src_formats = {
 179                 V4L2_PIX_FMT_NV12,
 180                 V4L2_PIX_FMT_YUV420,
 181                 V4L2_PIX_FMT_YVU420,
 182         },
 183         .dst_formats = {
 184                 V4L2_PIX_FMT_H264,
 185                 V4L2_PIX_FMT_MPEG4,
 186         },
 187 };
 188
 189 static const struct coda_video_device coda_bit_jpeg_encoder = {
 190         .name = "coda-jpeg-encoder",
 191         .type = CODA_INST_ENCODER,
 192         .ops = &coda_bit_encode_ops,
 193         .src_formats = {
 194                 V4L2_PIX_FMT_NV12,
 195                 V4L2_PIX_FMT_YUV420,
 196                 V4L2_PIX_FMT_YVU420,
 197                 V4L2_PIX_FMT_YUV422P,
 198         },
 199         .dst_formats = {
 200                 V4L2_PIX_FMT_JPEG,
 201         },
 202 };
 203
 204 static const struct coda_video_device coda_bit_decoder = {
 205         .name = "coda-video-decoder",
 206         .type = CODA_INST_DECODER,
 207         .ops = &coda_bit_decode_ops,
 208         .src_formats = {
 209                 V4L2_PIX_FMT_H264,
 210                 V4L2_PIX_FMT_MPEG2,
 211                 V4L2_PIX_FMT_MPEG4,
 212         },
 213         .dst_formats = {
 214                 V4L2_PIX_FMT_NV12,
 215                 V4L2_PIX_FMT_YUV420,
 216                 V4L2_PIX_FMT_YVU420,
 217                 /*
 218                  * If V4L2_PIX_FMT_YUYV should be default,
 219                  * set_default_params() must be adjusted.
 220                  */
 221                 V4L2_PIX_FMT_YUYV,
 222         },
 223 };
 224
 225 static const struct coda_video_device coda_bit_jpeg_decoder = {
 226         .name = "coda-jpeg-decoder",
 227         .type = CODA_INST_DECODER,
 228         .ops = &coda_bit_decode_ops,
 229         .src_formats = {
 230                 V4L2_PIX_FMT_JPEG,
 231         },
 232         .dst_formats = {
 233                 V4L2_PIX_FMT_NV12,
 234                 V4L2_PIX_FMT_YUV420,
 235                 V4L2_PIX_FMT_YVU420,
 236                 V4L2_PIX_FMT_YUV422P,
 237         },
 238 };
 239
 240 static const struct coda_video_device coda9_jpeg_encoder = {
 241         .name = "coda-jpeg-encoder",
 242         .type = CODA_INST_ENCODER,
 243         .ops = &coda9_jpeg_encode_ops,
 244         .direct = true,
 245         .src_formats = {
 246                 V4L2_PIX_FMT_NV12,
 247                 V4L2_PIX_FMT_YUV420,
 248                 V4L2_PIX_FMT_YVU420,
 249                 V4L2_PIX_FMT_YUV422P,
 250         },
 251         .dst_formats = {
 252                 V4L2_PIX_FMT_JPEG,
 253         },
 254 };
 255
 256 static const struct coda_video_device coda9_jpeg_decoder = {
 257         .name = "coda-jpeg-decoder",
 258         .type = CODA_INST_DECODER,
 259         .ops = &coda9_jpeg_decode_ops,
 260         .direct = true,
 261         .src_formats = {
 262                 V4L2_PIX_FMT_JPEG,
 263         },
 264         .dst_formats = {
 265                 V4L2_PIX_FMT_NV12,
 266                 V4L2_PIX_FMT_YUV420,
 267                 V4L2_PIX_FMT_YVU420,
 268                 V4L2_PIX_FMT_YUV422P,
 269         },
 270 };
 271
 272 static const struct coda_video_device *codadx6_video_devices[] = {
 273         &coda_bit_encoder,
 274 };
 275
 276 static const struct coda_video_device *codahx4_video_devices[] = {
 277         &coda_bit_encoder,
 278         &coda_bit_decoder,
 279 };
 280
 281 static const struct coda_video_device *coda7_video_devices[] = {
 282         &coda_bit_jpeg_encoder,
 283         &coda_bit_jpeg_decoder,
 284         &coda_bit_encoder,
 285         &coda_bit_decoder,
 286 };
 287
 288 static const struct coda_video_device *coda9_video_devices[] = {
 289         &coda9_jpeg_encoder,
 290         &coda9_jpeg_decoder,
 291         &coda_bit_encoder,
 292         &coda_bit_decoder,
 293 };
 294
 295 /*
 296  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 297  * tables.
 298  */
 299 static u32 coda_format_normalize_yuv(u32 fourcc)
 300 {
 301         switch (fourcc) {
 302         case V4L2_PIX_FMT_NV12:
 303         case V4L2_PIX_FMT_YUV420:
 304         case V4L2_PIX_FMT_YVU420:
 305         case V4L2_PIX_FMT_YUV422P:
 306         case V4L2_PIX_FMT_YUYV:
 307                 return V4L2_PIX_FMT_YUV420;
 308         default:
 309                 return fourcc;
 310         }
 311 }
 312
 313 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 314                                                 int src_fourcc, int dst_fourcc)
 315 {
 316         const struct coda_codec *codecs = dev->devtype->codecs;
 317         int num_codecs = dev->devtype->num_codecs;
 318         int k;
 319
 320         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 321         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 322         if (src_fourcc == dst_fourcc)
 323                 return NULL;
 324
 325         for (k = 0; k < num_codecs; k++) {
 326                 if (codecs[k].src_fourcc == src_fourcc &&
 327                     codecs[k].dst_fourcc == dst_fourcc)
 328                         break;
 329         }
 330
 331         if (k == num_codecs)
 332                 return NULL;
 333
 334         return &codecs[k];
 335 }
 336
 337 static void coda_get_max_dimensions(struct coda_dev *dev,
 338                                     const struct coda_codec *codec,
 339                                     int *max_w, int *max_h)
 340 {
 341         const struct coda_codec *codecs = dev->devtype->codecs;
 342         int num_codecs = dev->devtype->num_codecs;
 343         unsigned int w, h;
 344         int k;
 345
 346         if (codec) {
 347                 w = codec->max_w;
 348                 h = codec->max_h;
 349         } else {
 350                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 351                         w = max(w, codecs[k].max_w);
 352                         h = max(h, codecs[k].max_h);
 353                 }
 354         }
 355
 356         if (max_w)
 357                 *max_w = w;
 358         if (max_h)
 359                 *max_h = h;
 360 }
 361
 362 static const struct coda_video_device *to_coda_video_device(struct video_device
 363                                                             *vdev)
 364 {
 365         struct coda_dev *dev = video_get_drvdata(vdev);
 366         unsigned int i = vdev - dev->vfd;
 367
 368         if (i >= dev->devtype->num_vdevs)
 369                 return NULL;
 370
 371         return dev->devtype->vdevs[i];
 372 }
 373
 374 const char *coda_product_name(int product)
 375 {
 376         static char buf[9];
 377
 378         switch (product) {
 379         case CODA_DX6:
 380                 return "CodaDx6";
 381         case CODA_HX4:
 382                 return "CodaHx4";
 383         case CODA_7541:
 384                 return "CODA7541";
 385         case CODA_960:
 386                 return "CODA960";
 387         default:
 388                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 389                 return buf;
 390         }
 391 }
 392
 393 static struct vdoa_data *coda_get_vdoa_data(void)
 394 {
 395         struct device_node *vdoa_node;
 396         struct platform_device *vdoa_pdev;
 397         struct vdoa_data *vdoa_data = NULL;
 398
 399         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 400         if (!vdoa_node)
 401                 return NULL;
 402
 403         vdoa_pdev = of_find_device_by_node(vdoa_node);
 404         if (!vdoa_pdev)
 405                 goto out;
 406
 407         vdoa_data = platform_get_drvdata(vdoa_pdev);
 408         if (!vdoa_data)
 409                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 410
 411 out:
 412         of_node_put(vdoa_node);
 413
 414         return vdoa_data;
 415 }
 416
 417 /*
 418  * V4L2 ioctl() operations.
 419  */
 420 static int coda_querycap(struct file *file, void *priv,
 421                          struct v4l2_capability *cap)
 422 {
 423         struct coda_ctx *ctx = fh_to_ctx(priv);
 424
 425         strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 426         strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 427                 sizeof(cap->card));
 428         strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 429         return 0;
 430 }
 431
 432 static const u32 coda_formats_420[CODA_MAX_FORMATS] = {
 433                 V4L2_PIX_FMT_NV12,
 434                 V4L2_PIX_FMT_YUV420,
 435                 V4L2_PIX_FMT_YVU420,
 436 };
 437
 438 static int coda_enum_fmt(struct file *file, void *priv,
 439                          struct v4l2_fmtdesc *f)
 440 {
 441         struct video_device *vdev = video_devdata(file);
 442         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 443         struct coda_ctx *ctx = fh_to_ctx(priv);
 444         const u32 *formats;
 445
 446         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 447                 formats = cvd->src_formats;
 448         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 449                 struct coda_q_data *q_data_src;
 450                 struct vb2_queue *src_vq;
 451
 452                 formats = cvd->dst_formats;
 453
 454                 /*
 455                  * If the source format is already fixed, only allow the same
 456                  * chroma subsampling.
 457                  */
 458                 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 459                 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
 460                                          V4L2_BUF_TYPE_VIDEO_OUTPUT);
 461                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 462                     vb2_is_streaming(src_vq)) {
 463                         if (ctx->params.jpeg_chroma_subsampling ==
 464                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
 465                                 formats = coda_formats_420;
 466                         } else if (ctx->params.jpeg_chroma_subsampling ==
 467                                    V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
 468                                 f->pixelformat = V4L2_PIX_FMT_YUV422P;
 469                                 return f->index ? -EINVAL : 0;
 470                         }
 471                 }
 472         } else {
 473                 return -EINVAL;
 474         }
 475
 476         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 477                 return -EINVAL;
 478
 479         /* Skip YUYV if the vdoa is not available */
 480         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 481             formats[f->index] == V4L2_PIX_FMT_YUYV)
 482                 return -EINVAL;
 483
 484         f->pixelformat = formats[f->index];
 485
 486         return 0;
 487 }
 488
 489 static int coda_g_fmt(struct file *file, void *priv,
 490                       struct v4l2_format *f)
 491 {
 492         struct coda_q_data *q_data;
 493         struct coda_ctx *ctx = fh_to_ctx(priv);
 494
 495         q_data = get_q_data(ctx, f->type);
 496         if (!q_data)
 497                 return -EINVAL;
 498
 499         f->fmt.pix.field        = V4L2_FIELD_NONE;
 500         f->fmt.pix.pixelformat  = q_data->fourcc;
 501         f->fmt.pix.width        = q_data->width;
 502         f->fmt.pix.height       = q_data->height;
 503         f->fmt.pix.bytesperline = q_data->bytesperline;
 504
 505         f->fmt.pix.sizeimage    = q_data->sizeimage;
 506         f->fmt.pix.colorspace   = ctx->colorspace;
 507         f->fmt.pix.xfer_func    = ctx->xfer_func;
 508         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 509         f->fmt.pix.quantization = ctx->quantization;
 510
 511         return 0;
 512 }
 513
 514 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 515 {
 516         struct coda_q_data *q_data;
 517         const u32 *formats;
 518         int i;
 519
 520         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 521                 formats = ctx->cvd->src_formats;
 522         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 523                 formats = ctx->cvd->dst_formats;
 524         else
 525                 return -EINVAL;
 526
 527         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 528                 /* Skip YUYV if the vdoa is not available */
 529                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 530                     formats[i] == V4L2_PIX_FMT_YUYV)
 531                         continue;
 532
 533                 if (formats[i] == f->fmt.pix.pixelformat) {
 534                         f->fmt.pix.pixelformat = formats[i];
 535                         return 0;
 536                 }
 537         }
 538
 539         /* Fall back to currently set pixelformat */
 540         q_data = get_q_data(ctx, f->type);
 541         f->fmt.pix.pixelformat = q_data->fourcc;
 542
 543         return 0;
 544 }
 545
 546 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 547                              bool *use_vdoa)
 548 {
 549         int err;
 550
 551         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 552                 return -EINVAL;
 553
 554         if (!use_vdoa)
 555                 return -EINVAL;
 556
 557         if (!ctx->vdoa) {
 558                 *use_vdoa = false;
 559                 return 0;
 560         }
 561
 562         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 563                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 564         if (err) {
 565                 *use_vdoa = false;
 566                 return 0;
 567         }
 568
 569         *use_vdoa = true;
 570         return 0;
 571 }
 572
 573 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 574                                             u32 width, u32 height)
 575 {
 576         /*
 577          * This is a rough estimate for sensible compressed buffer
 578          * sizes (between 1 and 16 bits per pixel). This could be
 579          * improved by better format specific worst case estimates.
 580          */
 581         return round_up(clamp(sizeimage, width * height / 8,
 582                                          width * height * 2), PAGE_SIZE);
 583 }
 584
 585 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 586                         struct v4l2_format *f)
 587 {
 588         struct coda_dev *dev = ctx->dev;
 589         unsigned int max_w, max_h;
 590         enum v4l2_field field;
 591
 592         field = f->fmt.pix.field;
 593         if (field == V4L2_FIELD_ANY)
 594                 field = V4L2_FIELD_NONE;
 595         else if (V4L2_FIELD_NONE != field)
 596                 return -EINVAL;
 597
 598         /* V4L2 specification suggests the driver corrects the format struct
 599          * if any of the dimensions is unsupported */
 600         f->fmt.pix.field = field;
 601
 602         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 603         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 604                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 605                               S_ALIGN);
 606
 607         switch (f->fmt.pix.pixelformat) {
 608         case V4L2_PIX_FMT_NV12:
 609         case V4L2_PIX_FMT_YUV420:
 610         case V4L2_PIX_FMT_YVU420:
 611                 /*
 612                  * Frame stride must be at least multiple of 8,
 613                  * but multiple of 16 for h.264 or JPEG 4:2:x
 614                  */
 615                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 616                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 617                                         f->fmt.pix.height * 3 / 2;
 618                 break;
 619         case V4L2_PIX_FMT_YUYV:
 620                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 621                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 622                                         f->fmt.pix.height;
 623                 break;
 624         case V4L2_PIX_FMT_YUV422P:
 625                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 626                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 627                                         f->fmt.pix.height * 2;
 628                 break;
 629         case V4L2_PIX_FMT_JPEG:
 630         case V4L2_PIX_FMT_H264:
 631         case V4L2_PIX_FMT_MPEG4:
 632         case V4L2_PIX_FMT_MPEG2:
 633                 f->fmt.pix.bytesperline = 0;
 634                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 635                                                         f->fmt.pix.sizeimage,
 636                                                         f->fmt.pix.width,
 637                                                         f->fmt.pix.height);
 638                 break;
 639         default:
 640                 BUG();
 641         }
 642
 643         return 0;
 644 }
 645
 646 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 647                                 struct v4l2_format *f)
 648 {
 649         struct coda_ctx *ctx = fh_to_ctx(priv);
 650         const struct coda_q_data *q_data_src;
 651         const struct coda_codec *codec;
 652         struct vb2_queue *src_vq;
 653         int ret;
 654         bool use_vdoa;
 655
 656         ret = coda_try_pixelformat(ctx, f);
 657         if (ret < 0)
 658                 return ret;
 659
 660         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 661
 662         /*
 663          * If the source format is already fixed, only allow the same output
 664          * resolution. When decoding JPEG images, we also have to make sure to
 665          * use the same chroma subsampling.
 666          */
 667         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 668         if (vb2_is_streaming(src_vq)) {
 669                 f->fmt.pix.width = q_data_src->width;
 670                 f->fmt.pix.height = q_data_src->height;
 671
 672                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
 673                         if (ctx->params.jpeg_chroma_subsampling ==
 674                             V4L2_JPEG_CHROMA_SUBSAMPLING_420 &&
 675                             f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P)
 676                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
 677                         else if (ctx->params.jpeg_chroma_subsampling ==
 678                                  V4L2_JPEG_CHROMA_SUBSAMPLING_422)
 679                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 680                 }
 681         }
 682
 683         f->fmt.pix.colorspace = ctx->colorspace;
 684         f->fmt.pix.xfer_func = ctx->xfer_func;
 685         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 686         f->fmt.pix.quantization = ctx->quantization;
 687
 688         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 689         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 690                                 f->fmt.pix.pixelformat);
 691         if (!codec)
 692                 return -EINVAL;
 693
 694         ret = coda_try_fmt(ctx, codec, f);
 695         if (ret < 0)
 696                 return ret;
 697
 698         /* The decoders always write complete macroblocks or MCUs */
 699         if (ctx->inst_type == CODA_INST_DECODER) {
 700                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 701                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
 702                 if (codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
 703                     f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
 704                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 705                                                f->fmt.pix.height * 2;
 706                 } else {
 707                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 708                                                f->fmt.pix.height * 3 / 2;
 709                 }
 710
 711                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 712                 if (ret < 0)
 713                         return ret;
 714
 715                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 716                         if (!use_vdoa)
 717                                 return -EINVAL;
 718
 719                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 720                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 721                                 f->fmt.pix.height;
 722                 }
 723         }
 724
 725         return 0;
 726 }
 727
 728 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 729 {
 730         enum v4l2_colorspace colorspace;
 731
 732         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 733                 colorspace = V4L2_COLORSPACE_JPEG;
 734         else if (fmt->width <= 720 && fmt->height <= 576)
 735                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 736         else
 737                 colorspace = V4L2_COLORSPACE_REC709;
 738
 739         fmt->colorspace = colorspace;
 740         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 741         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 742         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 743 }
 744
 745 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 746                                 struct v4l2_format *f)
 747 {
 748         struct coda_ctx *ctx = fh_to_ctx(priv);
 749         struct coda_dev *dev = ctx->dev;
 750         const struct coda_q_data *q_data_dst;
 751         const struct coda_codec *codec;
 752         int ret;
 753
 754         ret = coda_try_pixelformat(ctx, f);
 755         if (ret < 0)
 756                 return ret;
 757
 758         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 759                 coda_set_default_colorspace(&f->fmt.pix);
 760
 761         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 762         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 763
 764         return coda_try_fmt(ctx, codec, f);
 765 }
 766
 767 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 768                       struct v4l2_rect *r)
 769 {
 770         struct coda_q_data *q_data;
 771         struct vb2_queue *vq;
 772
 773         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 774         if (!vq)
 775                 return -EINVAL;
 776
 777         q_data = get_q_data(ctx, f->type);
 778         if (!q_data)
 779                 return -EINVAL;
 780
 781         if (vb2_is_busy(vq)) {
 782                 v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
 783                          __func__, v4l2_type_names[f->type], vq->num_buffers);
 784                 return -EBUSY;
 785         }
 786
 787         q_data->fourcc = f->fmt.pix.pixelformat;
 788         q_data->width = f->fmt.pix.width;
 789         q_data->height = f->fmt.pix.height;
 790         q_data->bytesperline = f->fmt.pix.bytesperline;
 791         q_data->sizeimage = f->fmt.pix.sizeimage;
 792         if (r) {
 793                 q_data->rect = *r;
 794         } else {
 795                 q_data->rect.left = 0;
 796                 q_data->rect.top = 0;
 797                 q_data->rect.width = f->fmt.pix.width;
 798                 q_data->rect.height = f->fmt.pix.height;
 799         }
 800
 801         switch (f->fmt.pix.pixelformat) {
 802         case V4L2_PIX_FMT_YUYV:
 803                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 804                 break;
 805         case V4L2_PIX_FMT_NV12:
 806                 if (!disable_tiling && ctx->use_bit &&
 807                     ctx->dev->devtype->product == CODA_960) {
 808                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 809                         break;
 810                 }
 811                 fallthrough;
 812         case V4L2_PIX_FMT_YUV420:
 813         case V4L2_PIX_FMT_YVU420:
 814         case V4L2_PIX_FMT_YUV422P:
 815                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 816                 break;
 817         default:
 818                 break;
 819         }
 820
 821         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 822             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 823             ctx->use_vdoa)
 824                 vdoa_context_configure(ctx->vdoa,
 825                                        round_up(f->fmt.pix.width, 16),
 826                                        f->fmt.pix.height,
 827                                        f->fmt.pix.pixelformat);
 828         else
 829                 ctx->use_vdoa = false;
 830
 831         coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
 832                  v4l2_type_names[f->type], q_data->width, q_data->height,
 833                  (char *)&q_data->fourcc,
 834                  (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 835
 836         return 0;
 837 }
 838
 839 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 840                               struct v4l2_format *f)
 841 {
 842         struct coda_ctx *ctx = fh_to_ctx(priv);
 843         struct coda_q_data *q_data_src;
 844         const struct coda_codec *codec;
 845         struct v4l2_rect r;
 846         int ret;
 847
 848         ret = coda_try_fmt_vid_cap(file, priv, f);
 849         if (ret)
 850                 return ret;
 851
 852         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 853         r.left = 0;
 854         r.top = 0;
 855         r.width = q_data_src->width;
 856         r.height = q_data_src->height;
 857
 858         ret = coda_s_fmt(ctx, f, &r);
 859         if (ret)
 860                 return ret;
 861
 862         if (ctx->inst_type != CODA_INST_ENCODER)
 863                 return 0;
 864
 865         /* Setting the coded format determines the selected codec */
 866         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 867                                 f->fmt.pix.pixelformat);
 868         if (!codec) {
 869                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 870                 return -EINVAL;
 871         }
 872         ctx->codec = codec;
 873
 874         ctx->colorspace = f->fmt.pix.colorspace;
 875         ctx->xfer_func = f->fmt.pix.xfer_func;
 876         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 877         ctx->quantization = f->fmt.pix.quantization;
 878
 879         return 0;
 880 }
 881
 882 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 883                               struct v4l2_format *f)
 884 {
 885         struct coda_ctx *ctx = fh_to_ctx(priv);
 886         const struct coda_codec *codec;
 887         struct v4l2_format f_cap;
 888         struct vb2_queue *dst_vq;
 889         int ret;
 890
 891         ret = coda_try_fmt_vid_out(file, priv, f);
 892         if (ret)
 893                 return ret;
 894
 895         ret = coda_s_fmt(ctx, f, NULL);
 896         if (ret)
 897                 return ret;
 898
 899         ctx->colorspace = f->fmt.pix.colorspace;
 900         ctx->xfer_func = f->fmt.pix.xfer_func;
 901         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 902         ctx->quantization = f->fmt.pix.quantization;
 903
 904         if (ctx->inst_type != CODA_INST_DECODER)
 905                 return 0;
 906
 907         /* Setting the coded format determines the selected codec */
 908         codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
 909                                 V4L2_PIX_FMT_YUV420);
 910         if (!codec) {
 911                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 912                 return -EINVAL;
 913         }
 914         ctx->codec = codec;
 915
 916         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 917         if (!dst_vq)
 918                 return -EINVAL;
 919
 920         /*
 921          * Setting the capture queue format is not possible while the capture
 922          * queue is still busy. This is not an error, but the user will have to
 923          * make sure themselves that the capture format is set correctly before
 924          * starting the output queue again.
 925          */
 926         if (vb2_is_busy(dst_vq))
 927                 return 0;
 928
 929         memset(&f_cap, 0, sizeof(f_cap));
 930         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 931         coda_g_fmt(file, priv, &f_cap);
 932         f_cap.fmt.pix.width = f->fmt.pix.width;
 933         f_cap.fmt.pix.height = f->fmt.pix.height;
 934
 935         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 936 }
 937
 938 static int coda_reqbufs(struct file *file, void *priv,
 939                         struct v4l2_requestbuffers *rb)
 940 {
 941         struct coda_ctx *ctx = fh_to_ctx(priv);
 942         int ret;
 943
 944         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 945         if (ret)
 946                 return ret;
 947
 948         /*
 949          * Allow to allocate instance specific per-context buffers, such as
 950          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 951          */
 952         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 953                 return ctx->ops->reqbufs(ctx, rb);
 954
 955         return 0;
 956 }
 957
 958 static int coda_qbuf(struct file *file, void *priv,
 959                      struct v4l2_buffer *buf)
 960 {
 961         struct coda_ctx *ctx = fh_to_ctx(priv);
 962
 963         if (ctx->inst_type == CODA_INST_DECODER &&
 964             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 965                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 966
 967         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 968 }
 969
 970 static int coda_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 971 {
 972         struct coda_ctx *ctx = fh_to_ctx(priv);
 973         int ret;
 974
 975         ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
 976
 977         if (ctx->inst_type == CODA_INST_DECODER &&
 978             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 979                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 980
 981         return ret;
 982 }
 983
 984 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
 985                        enum vb2_buffer_state state)
 986 {
 987         const struct v4l2_event eos_event = {
 988                 .type = V4L2_EVENT_EOS
 989         };
 990
 991         if (buf->flags & V4L2_BUF_FLAG_LAST)
 992                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 993
 994         v4l2_m2m_buf_done(buf, state);
 995 }
 996
 997 static int coda_g_selection(struct file *file, void *fh,
 998                             struct v4l2_selection *s)
 999 {
1000         struct coda_ctx *ctx = fh_to_ctx(fh);
1001         struct coda_q_data *q_data;
1002         struct v4l2_rect r, *rsel;
1003
1004         q_data = get_q_data(ctx, s->type);
1005         if (!q_data)
1006                 return -EINVAL;
1007
1008         r.left = 0;
1009         r.top = 0;
1010         r.width = q_data->width;
1011         r.height = q_data->height;
1012         rsel = &q_data->rect;
1013
1014         switch (s->target) {
1015         case V4L2_SEL_TGT_CROP_DEFAULT:
1016         case V4L2_SEL_TGT_CROP_BOUNDS:
1017                 rsel = &r;
1018                 fallthrough;
1019         case V4L2_SEL_TGT_CROP:
1020                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
1021                     ctx->inst_type == CODA_INST_DECODER)
1022                         return -EINVAL;
1023                 break;
1024         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1025         case V4L2_SEL_TGT_COMPOSE_PADDED:
1026                 rsel = &r;
1027                 fallthrough;
1028         case V4L2_SEL_TGT_COMPOSE:
1029         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1030                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1031                     ctx->inst_type == CODA_INST_ENCODER)
1032                         return -EINVAL;
1033                 break;
1034         default:
1035                 return -EINVAL;
1036         }
1037
1038         s->r = *rsel;
1039
1040         return 0;
1041 }
1042
1043 static int coda_s_selection(struct file *file, void *fh,
1044                             struct v4l2_selection *s)
1045 {
1046         struct coda_ctx *ctx = fh_to_ctx(fh);
1047         struct coda_q_data *q_data;
1048
1049         switch (s->target) {
1050         case V4L2_SEL_TGT_CROP:
1051                 if (ctx->inst_type == CODA_INST_ENCODER &&
1052                     s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1053                         q_data = get_q_data(ctx, s->type);
1054                         if (!q_data)
1055                                 return -EINVAL;
1056
1057                         s->r.left = 0;
1058                         s->r.top = 0;
1059                         s->r.width = clamp(s->r.width, 2U, q_data->width);
1060                         s->r.height = clamp(s->r.height, 2U, q_data->height);
1061
1062                         if (s->flags & V4L2_SEL_FLAG_LE) {
1063                                 s->r.width = round_up(s->r.width, 2);
1064                                 s->r.height = round_up(s->r.height, 2);
1065                         } else {
1066                                 s->r.width = round_down(s->r.width, 2);
1067                                 s->r.height = round_down(s->r.height, 2);
1068                         }
1069
1070                         q_data->rect = s->r;
1071
1072                         coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
1073                                  s->r.width, s->r.height);
1074
1075                         return 0;
1076                 }
1077                 fallthrough;
1078         case V4L2_SEL_TGT_NATIVE_SIZE:
1079         case V4L2_SEL_TGT_COMPOSE:
1080                 return coda_g_selection(file, fh, s);
1081         default:
1082                 /* v4l2-compliance expects this to fail for read-only targets */
1083                 return -EINVAL;
1084         }
1085 }
1086
1087 static int coda_try_encoder_cmd(struct file *file, void *fh,
1088                                 struct v4l2_encoder_cmd *ec)
1089 {
1090         struct coda_ctx *ctx = fh_to_ctx(fh);
1091
1092         if (ctx->inst_type != CODA_INST_ENCODER)
1093                 return -ENOTTY;
1094
1095         return v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1096 }
1097
1098 static void coda_wake_up_capture_queue(struct coda_ctx *ctx)
1099 {
1100         struct vb2_queue *dst_vq;
1101
1102         coda_dbg(1, ctx, "waking up capture queue\n");
1103
1104         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1105         dst_vq->last_buffer_dequeued = true;
1106         wake_up(&dst_vq->done_wq);
1107 }
1108
1109 static int coda_encoder_cmd(struct file *file, void *fh,
1110                             struct v4l2_encoder_cmd *ec)
1111 {
1112         struct coda_ctx *ctx = fh_to_ctx(fh);
1113         struct vb2_v4l2_buffer *buf;
1114         int ret;
1115
1116         ret = coda_try_encoder_cmd(file, fh, ec);
1117         if (ret < 0)
1118                 return ret;
1119
1120         mutex_lock(&ctx->wakeup_mutex);
1121         buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1122         if (buf) {
1123                 /*
1124                  * If the last output buffer is still on the queue, make sure
1125                  * that decoder finish_run will see the last flag and report it
1126                  * to userspace.
1127                  */
1128                 buf->flags |= V4L2_BUF_FLAG_LAST;
1129         } else {
1130                 /* Set the stream-end flag on this context */
1131                 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1132
1133                 /*
1134                  * If the last output buffer has already been taken from the
1135                  * queue, wake up the capture queue and signal end of stream
1136                  * via the -EPIPE mechanism.
1137                  */
1138                 coda_wake_up_capture_queue(ctx);
1139         }
1140         mutex_unlock(&ctx->wakeup_mutex);
1141
1142         return 0;
1143 }
1144
1145 static int coda_try_decoder_cmd(struct file *file, void *fh,
1146                                 struct v4l2_decoder_cmd *dc)
1147 {
1148         struct coda_ctx *ctx = fh_to_ctx(fh);
1149
1150         if (ctx->inst_type != CODA_INST_DECODER)
1151                 return -ENOTTY;
1152
1153         return v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1154 }
1155
1156 static bool coda_mark_last_meta(struct coda_ctx *ctx)
1157 {
1158         struct coda_buffer_meta *meta;
1159
1160         coda_dbg(1, ctx, "marking last meta\n");
1161
1162         spin_lock(&ctx->buffer_meta_lock);
1163         if (list_empty(&ctx->buffer_meta_list)) {
1164                 spin_unlock(&ctx->buffer_meta_lock);
1165                 return false;
1166         }
1167
1168         meta = list_last_entry(&ctx->buffer_meta_list, struct coda_buffer_meta,
1169                                list);
1170         meta->last = true;
1171
1172         spin_unlock(&ctx->buffer_meta_lock);
1173         return true;
1174 }
1175
1176 static bool coda_mark_last_dst_buf(struct coda_ctx *ctx)
1177 {
1178         struct vb2_v4l2_buffer *buf;
1179         struct vb2_buffer *dst_vb;
1180         struct vb2_queue *dst_vq;
1181         unsigned long flags;
1182
1183         coda_dbg(1, ctx, "marking last capture buffer\n");
1184
1185         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1186         spin_lock_irqsave(&dst_vq->done_lock, flags);
1187         if (list_empty(&dst_vq->done_list)) {
1188                 spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1189                 return false;
1190         }
1191
1192         dst_vb = list_last_entry(&dst_vq->done_list, struct vb2_buffer,
1193                                  done_entry);
1194         buf = to_vb2_v4l2_buffer(dst_vb);
1195         buf->flags |= V4L2_BUF_FLAG_LAST;
1196
1197         spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1198         return true;
1199 }
1200
1201 static int coda_decoder_cmd(struct file *file, void *fh,
1202                             struct v4l2_decoder_cmd *dc)
1203 {
1204         struct coda_ctx *ctx = fh_to_ctx(fh);
1205         struct coda_dev *dev = ctx->dev;
1206         struct vb2_v4l2_buffer *buf;
1207         struct vb2_queue *dst_vq;
1208         bool stream_end;
1209         bool wakeup;
1210         int ret;
1211
1212         ret = coda_try_decoder_cmd(file, fh, dc);
1213         if (ret < 0)
1214                 return ret;
1215
1216         switch (dc->cmd) {
1217         case V4L2_DEC_CMD_START:
1218                 mutex_lock(&dev->coda_mutex);
1219                 mutex_lock(&ctx->bitstream_mutex);
1220                 coda_bitstream_flush(ctx);
1221                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1222                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
1223                 vb2_clear_last_buffer_dequeued(dst_vq);
1224                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1225                 coda_fill_bitstream(ctx, NULL);
1226                 mutex_unlock(&ctx->bitstream_mutex);
1227                 mutex_unlock(&dev->coda_mutex);
1228                 break;
1229         case V4L2_DEC_CMD_STOP:
1230                 stream_end = false;
1231                 wakeup = false;
1232
1233                 mutex_lock(&ctx->wakeup_mutex);
1234
1235                 buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1236                 if (buf) {
1237                         coda_dbg(1, ctx, "marking last pending buffer\n");
1238
1239                         /* Mark last buffer */
1240                         buf->flags |= V4L2_BUF_FLAG_LAST;
1241
1242                         if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) == 0) {
1243                                 coda_dbg(1, ctx, "all remaining buffers queued\n");
1244                                 stream_end = true;
1245                         }
1246                 } else {
1247                         if (ctx->use_bit)
1248                                 if (coda_mark_last_meta(ctx))
1249                                         stream_end = true;
1250                                 else
1251                                         wakeup = true;
1252                         else
1253                                 if (!coda_mark_last_dst_buf(ctx))
1254                                         wakeup = true;
1255                 }
1256
1257                 if (stream_end) {
1258                         coda_dbg(1, ctx, "all remaining buffers queued\n");
1259
1260                         /* Set the stream-end flag on this context */
1261                         coda_bit_stream_end_flag(ctx);
1262                         ctx->hold = false;
1263                         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1264                 }
1265
1266                 if (wakeup) {
1267                         /* If there is no buffer in flight, wake up */
1268                         coda_wake_up_capture_queue(ctx);
1269                 }
1270
1271                 mutex_unlock(&ctx->wakeup_mutex);
1272                 break;
1273         default:
1274                 return -EINVAL;
1275         }
1276
1277         return 0;
1278 }
1279
1280 static int coda_enum_framesizes(struct file *file, void *fh,
1281                                 struct v4l2_frmsizeenum *fsize)
1282 {
1283         struct coda_ctx *ctx = fh_to_ctx(fh);
1284         struct coda_q_data *q_data_dst;
1285         const struct coda_codec *codec;
1286
1287         if (ctx->inst_type != CODA_INST_ENCODER)
1288                 return -ENOTTY;
1289
1290         if (fsize->index)
1291                 return -EINVAL;
1292
1293         if (coda_format_normalize_yuv(fsize->pixel_format) ==
1294             V4L2_PIX_FMT_YUV420) {
1295                 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1296                 codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1297                                         q_data_dst->fourcc);
1298         } else {
1299                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1300                                         fsize->pixel_format);
1301         }
1302         if (!codec)
1303                 return -EINVAL;
1304
1305         fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1306         fsize->stepwise.min_width = MIN_W;
1307         fsize->stepwise.max_width = codec->max_w;
1308         fsize->stepwise.step_width = 1;
1309         fsize->stepwise.min_height = MIN_H;
1310         fsize->stepwise.max_height = codec->max_h;
1311         fsize->stepwise.step_height = 1;
1312
1313         return 0;
1314 }
1315
1316 static int coda_enum_frameintervals(struct file *file, void *fh,
1317                                     struct v4l2_frmivalenum *f)
1318 {
1319         struct coda_ctx *ctx = fh_to_ctx(fh);
1320         int i;
1321
1322         if (f->index)
1323                 return -EINVAL;
1324
1325         /* Disallow YUYV if the vdoa is not available */
1326         if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1327                 return -EINVAL;
1328
1329         for (i = 0; i < CODA_MAX_FORMATS; i++) {
1330                 if (f->pixel_format == ctx->cvd->src_formats[i] ||
1331                     f->pixel_format == ctx->cvd->dst_formats[i])
1332                         break;
1333         }
1334         if (i == CODA_MAX_FORMATS)
1335                 return -EINVAL;
1336
1337         f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1338         f->stepwise.min.numerator = 1;
1339         f->stepwise.min.denominator = 65535;
1340         f->stepwise.max.numerator = 65536;
1341         f->stepwise.max.denominator = 1;
1342         f->stepwise.step.numerator = 1;
1343         f->stepwise.step.denominator = 1;
1344
1345         return 0;
1346 }
1347
1348 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1349 {
1350         struct coda_ctx *ctx = fh_to_ctx(fh);
1351         struct v4l2_fract *tpf;
1352
1353         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1354                 return -EINVAL;
1355
1356         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1357         tpf = &a->parm.output.timeperframe;
1358         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1359         tpf->numerator = 1 + (ctx->params.framerate >>
1360                               CODA_FRATE_DIV_OFFSET);
1361
1362         return 0;
1363 }
1364
1365 /*
1366  * Approximate timeperframe v4l2_fract with values that can be written
1367  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1368  */
1369 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1370 {
1371         struct v4l2_fract s = *timeperframe;
1372         struct v4l2_fract f0;
1373         struct v4l2_fract f1 = { 1, 0 };
1374         struct v4l2_fract f2 = { 0, 1 };
1375         unsigned int i, div, s_denominator;
1376
1377         /* Lower bound is 1/65535 */
1378         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1379                 timeperframe->numerator = 1;
1380                 timeperframe->denominator = 65535;
1381                 return;
1382         }
1383
1384         /* Upper bound is 65536/1 */
1385         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1386                 timeperframe->numerator = 65536;
1387                 timeperframe->denominator = 1;
1388                 return;
1389         }
1390
1391         /* Reduce fraction to lowest terms */
1392         div = gcd(s.numerator, s.denominator);
1393         if (div > 1) {
1394                 s.numerator /= div;
1395                 s.denominator /= div;
1396         }
1397
1398         if (s.numerator <= 65536 && s.denominator < 65536) {
1399                 *timeperframe = s;
1400                 return;
1401         }
1402
1403         /* Find successive convergents from continued fraction expansion */
1404         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1405                 f0 = f1;
1406                 f1 = f2;
1407
1408                 /* Stop when f2 exactly equals timeperframe */
1409                 if (s.numerator == 0)
1410                         break;
1411
1412                 i = s.denominator / s.numerator;
1413
1414                 f2.numerator = f0.numerator + i * f1.numerator;
1415                 f2.denominator = f0.denominator + i * f2.denominator;
1416
1417                 s_denominator = s.numerator;
1418                 s.numerator = s.denominator % s.numerator;
1419                 s.denominator = s_denominator;
1420         }
1421
1422         *timeperframe = f1;
1423 }
1424
1425 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1426 {
1427         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1428                 timeperframe->denominator;
1429 }
1430
1431 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1432 {
1433         struct coda_ctx *ctx = fh_to_ctx(fh);
1434         struct v4l2_fract *tpf;
1435
1436         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1437                 return -EINVAL;
1438
1439         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1440         tpf = &a->parm.output.timeperframe;
1441         coda_approximate_timeperframe(tpf);
1442         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1443         ctx->params.framerate_changed = true;
1444
1445         return 0;
1446 }
1447
1448 static int coda_subscribe_event(struct v4l2_fh *fh,
1449                                 const struct v4l2_event_subscription *sub)
1450 {
1451         struct coda_ctx *ctx = fh_to_ctx(fh);
1452
1453         switch (sub->type) {
1454         case V4L2_EVENT_EOS:
1455                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1456         case V4L2_EVENT_SOURCE_CHANGE:
1457                 if (ctx->inst_type == CODA_INST_DECODER)
1458                         return v4l2_event_subscribe(fh, sub, 0, NULL);
1459                 else
1460                         return -EINVAL;
1461         default:
1462                 return v4l2_ctrl_subscribe_event(fh, sub);
1463         }
1464 }
1465
1466 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1467         .vidioc_querycap        = coda_querycap,
1468
1469         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1470         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1471         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1472         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1473
1474         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1475         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1476         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1477         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1478
1479         .vidioc_reqbufs         = coda_reqbufs,
1480         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1481
1482         .vidioc_qbuf            = coda_qbuf,
1483         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1484         .vidioc_dqbuf           = coda_dqbuf,
1485         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1486         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1487
1488         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1489         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1490
1491         .vidioc_g_selection     = coda_g_selection,
1492         .vidioc_s_selection     = coda_s_selection,
1493
1494         .vidioc_try_encoder_cmd = coda_try_encoder_cmd,
1495         .vidioc_encoder_cmd     = coda_encoder_cmd,
1496         .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
1497         .vidioc_decoder_cmd     = coda_decoder_cmd,
1498
1499         .vidioc_g_parm          = coda_g_parm,
1500         .vidioc_s_parm          = coda_s_parm,
1501
1502         .vidioc_enum_framesizes = coda_enum_framesizes,
1503         .vidioc_enum_frameintervals = coda_enum_frameintervals,
1504
1505         .vidioc_subscribe_event = coda_subscribe_event,
1506         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1507 };
1508
1509 /*
1510  * Mem-to-mem operations.
1511  */
1512
1513 static void coda_device_run(void *m2m_priv)
1514 {
1515         struct coda_ctx *ctx = m2m_priv;
1516         struct coda_dev *dev = ctx->dev;
1517
1518         queue_work(dev->workqueue, &ctx->pic_run_work);
1519 }
1520
1521 static void coda_pic_run_work(struct work_struct *work)
1522 {
1523         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1524         struct coda_dev *dev = ctx->dev;
1525         int ret;
1526
1527         mutex_lock(&ctx->buffer_mutex);
1528         mutex_lock(&dev->coda_mutex);
1529
1530         ret = ctx->ops->prepare_run(ctx);
1531         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
1532                 mutex_unlock(&dev->coda_mutex);
1533                 mutex_unlock(&ctx->buffer_mutex);
1534                 /* job_finish scheduled by prepare_decode */
1535                 return;
1536         }
1537
1538         if (!wait_for_completion_timeout(&ctx->completion,
1539                                          msecs_to_jiffies(1000))) {
1540                 dev_err(dev->dev, "CODA PIC_RUN timeout\n");
1541
1542                 ctx->hold = true;
1543
1544                 coda_hw_reset(ctx);
1545
1546                 if (ctx->ops->run_timeout)
1547                         ctx->ops->run_timeout(ctx);
1548         } else {
1549                 ctx->ops->finish_run(ctx);
1550         }
1551
1552         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1553             ctx->ops->seq_end_work)
1554                 queue_work(dev->workqueue, &ctx->seq_end_work);
1555
1556         mutex_unlock(&dev->coda_mutex);
1557         mutex_unlock(&ctx->buffer_mutex);
1558
1559         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1560 }
1561
1562 static int coda_job_ready(void *m2m_priv)
1563 {
1564         struct coda_ctx *ctx = m2m_priv;
1565         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1566
1567         /*
1568          * For both 'P' and 'key' frame cases 1 picture
1569          * and 1 frame are needed. In the decoder case,
1570          * the compressed frame can be in the bitstream.
1571          */
1572         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1573                 coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1574                 return 0;
1575         }
1576
1577         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1578                 coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1579                 return 0;
1580         }
1581
1582         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1583                 bool stream_end = ctx->bit_stream_param &
1584                                   CODA_BIT_STREAM_END_FLAG;
1585                 int num_metas = ctx->num_metas;
1586                 struct coda_buffer_meta *meta;
1587                 unsigned int count;
1588
1589                 count = hweight32(ctx->frm_dis_flg);
1590                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1591                         coda_dbg(1, ctx,
1592                                  "not ready: all internal buffers in use: %d/%d (0x%x)",
1593                                  count, ctx->num_internal_frames,
1594                                  ctx->frm_dis_flg);
1595                         return 0;
1596                 }
1597
1598                 if (ctx->hold && !src_bufs) {
1599                         coda_dbg(1, ctx,
1600                                  "not ready: on hold for more buffers.\n");
1601                         return 0;
1602                 }
1603
1604                 if (!stream_end && (num_metas + src_bufs) < 2) {
1605                         coda_dbg(1, ctx,
1606                                  "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1607                                  num_metas, src_bufs);
1608                         return 0;
1609                 }
1610
1611                 meta = list_first_entry(&ctx->buffer_meta_list,
1612                                         struct coda_buffer_meta, list);
1613                 if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1614                     !stream_end) {
1615                         coda_dbg(1, ctx,
1616                                  "not ready: not enough bitstream data to read past %u (%u)\n",
1617                                  meta->end, ctx->bitstream_fifo.kfifo.in);
1618                         return 0;
1619                 }
1620         }
1621
1622         if (ctx->aborting) {
1623                 coda_dbg(1, ctx, "not ready: aborting\n");
1624                 return 0;
1625         }
1626
1627         coda_dbg(2, ctx, "job ready\n");
1628
1629         return 1;
1630 }
1631
1632 static void coda_job_abort(void *priv)
1633 {
1634         struct coda_ctx *ctx = priv;
1635
1636         ctx->aborting = 1;
1637
1638         coda_dbg(1, ctx, "job abort\n");
1639 }
1640
1641 static const struct v4l2_m2m_ops coda_m2m_ops = {
1642         .device_run     = coda_device_run,
1643         .job_ready      = coda_job_ready,
1644         .job_abort      = coda_job_abort,
1645 };
1646
1647 static void set_default_params(struct coda_ctx *ctx)
1648 {
1649         unsigned int max_w, max_h, usize, csize;
1650
1651         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1652                                      ctx->cvd->dst_formats[0]);
1653         max_w = min(ctx->codec->max_w, 1920U);
1654         max_h = min(ctx->codec->max_h, 1088U);
1655         usize = max_w * max_h * 3 / 2;
1656         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1657
1658         ctx->params.codec_mode = ctx->codec->mode;
1659         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1660                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1661         else
1662                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1663         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1664         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1665         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1666         ctx->params.framerate = 30;
1667
1668         /* Default formats for output and input queues */
1669         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1670         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1671         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1672         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1673         ctx->q_data[V4L2_M2M_DST].width = max_w;
1674         ctx->q_data[V4L2_M2M_DST].height = max_h;
1675         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1676                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1677                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1678                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1679                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1680         } else {
1681                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1682                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1683                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1684                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1685         }
1686         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1687         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1688         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1689         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1690
1691         /*
1692          * Since the RBC2AXI logic only supports a single chroma plane,
1693          * macroblock tiling only works for to NV12 pixel format.
1694          */
1695         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1696 }
1697
1698 /*
1699  * Queue operations
1700  */
1701 static int coda_queue_setup(struct vb2_queue *vq,
1702                                 unsigned int *nbuffers, unsigned int *nplanes,
1703                                 unsigned int sizes[], struct device *alloc_devs[])
1704 {
1705         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1706         struct coda_q_data *q_data;
1707         unsigned int size;
1708
1709         q_data = get_q_data(ctx, vq->type);
1710         size = q_data->sizeimage;
1711
1712         if (*nplanes)
1713                 return sizes[0] < size ? -EINVAL : 0;
1714
1715         *nplanes = 1;
1716         sizes[0] = size;
1717
1718         coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1719                  size);
1720
1721         return 0;
1722 }
1723
1724 static int coda_buf_prepare(struct vb2_buffer *vb)
1725 {
1726         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1727         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1728         struct coda_q_data *q_data;
1729
1730         q_data = get_q_data(ctx, vb->vb2_queue->type);
1731         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1732                 if (vbuf->field == V4L2_FIELD_ANY)
1733                         vbuf->field = V4L2_FIELD_NONE;
1734                 if (vbuf->field != V4L2_FIELD_NONE) {
1735                         v4l2_warn(&ctx->dev->v4l2_dev,
1736                                   "%s field isn't supported\n", __func__);
1737                         return -EINVAL;
1738                 }
1739         }
1740
1741         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1742                 v4l2_warn(&ctx->dev->v4l2_dev,
1743                           "%s data will not fit into plane (%lu < %lu)\n",
1744                           __func__, vb2_plane_size(vb, 0),
1745                           (long)q_data->sizeimage);
1746                 return -EINVAL;
1747         }
1748
1749         return 0;
1750 }
1751
1752 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1753 {
1754         if (!ctrl)
1755                 return;
1756
1757         v4l2_ctrl_lock(ctrl);
1758
1759         /*
1760          * Extend the control range if the parsed stream contains a known but
1761          * unsupported value or level.
1762          */
1763         if (value > ctrl->maximum) {
1764                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1765                         ctrl->menu_skip_mask & ~(1 << value),
1766                         ctrl->default_value);
1767         } else if (value < ctrl->minimum) {
1768                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1769                         ctrl->menu_skip_mask & ~(1 << value),
1770                         ctrl->default_value);
1771         }
1772
1773         __v4l2_ctrl_s_ctrl(ctrl, value);
1774
1775         v4l2_ctrl_unlock(ctrl);
1776 }
1777
1778 void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
1779                                      u8 level_idc)
1780 {
1781         const char * const *profile_names;
1782         const char * const *level_names;
1783         struct v4l2_ctrl *profile_ctrl;
1784         struct v4l2_ctrl *level_ctrl;
1785         const char *codec_name;
1786         u32 profile_cid;
1787         u32 level_cid;
1788         int profile;
1789         int level;
1790
1791         switch (ctx->codec->src_fourcc) {
1792         case V4L2_PIX_FMT_H264:
1793                 codec_name = "H264";
1794                 profile_cid = V4L2_CID_MPEG_VIDEO_H264_PROFILE;
1795                 level_cid = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1796                 profile_ctrl = ctx->h264_profile_ctrl;
1797                 level_ctrl = ctx->h264_level_ctrl;
1798                 profile = coda_h264_profile(profile_idc);
1799                 level = coda_h264_level(level_idc);
1800                 break;
1801         case V4L2_PIX_FMT_MPEG2:
1802                 codec_name = "MPEG-2";
1803                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
1804                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
1805                 profile_ctrl = ctx->mpeg2_profile_ctrl;
1806                 level_ctrl = ctx->mpeg2_level_ctrl;
1807                 profile = coda_mpeg2_profile(profile_idc);
1808                 level = coda_mpeg2_level(level_idc);
1809                 break;
1810         case V4L2_PIX_FMT_MPEG4:
1811                 codec_name = "MPEG-4";
1812                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
1813                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
1814                 profile_ctrl = ctx->mpeg4_profile_ctrl;
1815                 level_ctrl = ctx->mpeg4_level_ctrl;
1816                 profile = coda_mpeg4_profile(profile_idc);
1817                 level = coda_mpeg4_level(level_idc);
1818                 break;
1819         default:
1820                 return;
1821         }
1822
1823         profile_names = v4l2_ctrl_get_menu(profile_cid);
1824         level_names = v4l2_ctrl_get_menu(level_cid);
1825
1826         if (profile < 0) {
1827                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s profile: %u\n",
1828                           codec_name, profile_idc);
1829         } else {
1830                 coda_dbg(1, ctx, "Parsed %s profile: %s\n", codec_name,
1831                          profile_names[profile]);
1832                 coda_update_menu_ctrl(profile_ctrl, profile);
1833         }
1834
1835         if (level < 0) {
1836                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s level: %u\n",
1837                           codec_name, level_idc);
1838         } else {
1839                 coda_dbg(1, ctx, "Parsed %s level: %s\n", codec_name,
1840                          level_names[level]);
1841                 coda_update_menu_ctrl(level_ctrl, level);
1842         }
1843 }
1844
1845 static void coda_queue_source_change_event(struct coda_ctx *ctx)
1846 {
1847         static const struct v4l2_event source_change_event = {
1848                 .type = V4L2_EVENT_SOURCE_CHANGE,
1849                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1850         };
1851
1852         v4l2_event_queue_fh(&ctx->fh, &source_change_event);
1853 }
1854
1855 static void coda_buf_queue(struct vb2_buffer *vb)
1856 {
1857         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1858         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1859         struct vb2_queue *vq = vb->vb2_queue;
1860         struct coda_q_data *q_data;
1861
1862         q_data = get_q_data(ctx, vb->vb2_queue->type);
1863
1864         /*
1865          * In the decoder case, immediately try to copy the buffer into the
1866          * bitstream ringbuffer and mark it as ready to be dequeued.
1867          */
1868         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1869                 /*
1870                  * For backwards compatibility, queuing an empty buffer marks
1871                  * the stream end
1872                  */
1873                 if (vb2_get_plane_payload(vb, 0) == 0)
1874                         coda_bit_stream_end_flag(ctx);
1875
1876                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1877                         /*
1878                          * Unless already done, try to obtain profile_idc and
1879                          * level_idc from the SPS header. This allows to decide
1880                          * whether to enable reordering during sequence
1881                          * initialization.
1882                          */
1883                         if (!ctx->params.h264_profile_idc) {
1884                                 coda_sps_parse_profile(ctx, vb);
1885                                 coda_update_profile_level_ctrls(ctx,
1886                                                 ctx->params.h264_profile_idc,
1887                                                 ctx->params.h264_level_idc);
1888                         }
1889                 }
1890
1891                 mutex_lock(&ctx->bitstream_mutex);
1892                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1893                 if (vb2_is_streaming(vb->vb2_queue))
1894                         /* This set buf->sequence = ctx->qsequence++ */
1895                         coda_fill_bitstream(ctx, NULL);
1896                 mutex_unlock(&ctx->bitstream_mutex);
1897
1898                 if (!ctx->initialized) {
1899                         /*
1900                          * Run sequence initialization in case the queued
1901                          * buffer contained headers.
1902                          */
1903                         if (vb2_is_streaming(vb->vb2_queue) &&
1904                             ctx->ops->seq_init_work) {
1905                                 queue_work(ctx->dev->workqueue,
1906                                            &ctx->seq_init_work);
1907                                 flush_work(&ctx->seq_init_work);
1908                         }
1909
1910                         if (ctx->initialized)
1911                                 coda_queue_source_change_event(ctx);
1912                 }
1913         } else {
1914                 if ((ctx->inst_type == CODA_INST_ENCODER || !ctx->use_bit) &&
1915                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1916                         vbuf->sequence = ctx->qsequence++;
1917                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1918         }
1919 }
1920
1921 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1922                        size_t size, const char *name, struct dentry *parent)
1923 {
1924         buf->vaddr = dma_alloc_coherent(dev->dev, size, &buf->paddr,
1925                                         GFP_KERNEL);
1926         if (!buf->vaddr) {
1927                 v4l2_err(&dev->v4l2_dev,
1928                          "Failed to allocate %s buffer of size %zu\n",
1929                          name, size);
1930                 return -ENOMEM;
1931         }
1932
1933         buf->size = size;
1934
1935         if (name && parent) {
1936                 buf->blob.data = buf->vaddr;
1937                 buf->blob.size = size;
1938                 buf->dentry = debugfs_create_blob(name, 0644, parent,
1939                                                   &buf->blob);
1940         }
1941
1942         return 0;
1943 }
1944
1945 void coda_free_aux_buf(struct coda_dev *dev,
1946                        struct coda_aux_buf *buf)
1947 {
1948         if (buf->vaddr) {
1949                 dma_free_coherent(dev->dev, buf->size, buf->vaddr, buf->paddr);
1950                 buf->vaddr = NULL;
1951                 buf->size = 0;
1952                 debugfs_remove(buf->dentry);
1953                 buf->dentry = NULL;
1954         }
1955 }
1956
1957 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1958 {
1959         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1960         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1961         struct coda_q_data *q_data_src, *q_data_dst;
1962         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1963         struct vb2_v4l2_buffer *buf;
1964         struct list_head list;
1965         int ret = 0;
1966
1967         if (count < 1)
1968                 return -EINVAL;
1969
1970         coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1971
1972         INIT_LIST_HEAD(&list);
1973
1974         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1975         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1976                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1977                         /* copy the buffers that were queued before streamon */
1978                         mutex_lock(&ctx->bitstream_mutex);
1979                         coda_fill_bitstream(ctx, &list);
1980                         mutex_unlock(&ctx->bitstream_mutex);
1981
1982                         if (ctx->dev->devtype->product != CODA_960 &&
1983                             coda_get_bitstream_payload(ctx) < 512) {
1984                                 v4l2_err(v4l2_dev, "start payload < 512\n");
1985                                 ret = -EINVAL;
1986                                 goto err;
1987                         }
1988
1989                         if (!ctx->initialized) {
1990                                 /* Run sequence initialization */
1991                                 if (ctx->ops->seq_init_work) {
1992                                         queue_work(ctx->dev->workqueue,
1993                                                    &ctx->seq_init_work);
1994                                         flush_work(&ctx->seq_init_work);
1995                                 }
1996                         }
1997                 }
1998
1999                 /*
2000                  * Check the first input JPEG buffer to determine chroma
2001                  * subsampling.
2002                  */
2003                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
2004                         buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2005                         ret = coda_jpeg_decode_header(ctx, &buf->vb2_buf);
2006                         if (ret < 0) {
2007                                 v4l2_err(v4l2_dev,
2008                                          "failed to decode JPEG header: %d\n",
2009                                          ret);
2010                                 goto err;
2011                         }
2012
2013                         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2014                         q_data_dst->width = round_up(q_data_src->width, 16);
2015                         q_data_dst->height = round_up(q_data_src->height, 16);
2016                         q_data_dst->bytesperline = q_data_dst->width;
2017                         if (ctx->params.jpeg_chroma_subsampling ==
2018                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
2019                                 q_data_dst->sizeimage =
2020                                                 q_data_dst->bytesperline *
2021                                                 q_data_dst->height * 3 / 2;
2022                                 if (q_data_dst->fourcc != V4L2_PIX_FMT_YUV420)
2023                                         q_data_dst->fourcc = V4L2_PIX_FMT_NV12;
2024                         } else {
2025                                 q_data_dst->sizeimage =
2026                                                 q_data_dst->bytesperline *
2027                                                 q_data_dst->height * 2;
2028                                 q_data_dst->fourcc = V4L2_PIX_FMT_YUV422P;
2029                         }
2030                         q_data_dst->rect.left = 0;
2031                         q_data_dst->rect.top = 0;
2032                         q_data_dst->rect.width = q_data_src->width;
2033                         q_data_dst->rect.height = q_data_src->height;
2034                 }
2035                 ctx->streamon_out = 1;
2036         } else {
2037                 ctx->streamon_cap = 1;
2038         }
2039
2040         /* Don't start the coda unless both queues are on */
2041         if (!(ctx->streamon_out && ctx->streamon_cap))
2042                 goto out;
2043
2044         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2045         if ((q_data_src->rect.width != q_data_dst->width &&
2046              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
2047             (q_data_src->rect.height != q_data_dst->height &&
2048              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
2049                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
2050                          q_data_src->rect.width, q_data_src->rect.height,
2051                          q_data_dst->width, q_data_dst->height);
2052                 ret = -EINVAL;
2053                 goto err;
2054         }
2055
2056         /* Allow BIT decoder device_run with no new buffers queued */
2057         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2058                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
2059
2060         ctx->gopcounter = ctx->params.gop_size - 1;
2061
2062         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
2063                 ctx->params.gop_size = 1;
2064         ctx->gopcounter = ctx->params.gop_size - 1;
2065         /* Only decoders have this control */
2066         if (ctx->mb_err_cnt_ctrl)
2067                 v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl, 0);
2068
2069         ret = ctx->ops->start_streaming(ctx);
2070         if (ctx->inst_type == CODA_INST_DECODER) {
2071                 if (ret == -EAGAIN)
2072                         goto out;
2073         }
2074         if (ret < 0)
2075                 goto err;
2076
2077 out:
2078         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2079                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2080                         list_del(&m2m_buf->list);
2081                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
2082                 }
2083         }
2084         return 0;
2085
2086 err:
2087         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2088                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2089                         list_del(&m2m_buf->list);
2090                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
2091                 }
2092                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2093                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2094         } else {
2095                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2096                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2097         }
2098         return ret;
2099 }
2100
2101 static void coda_stop_streaming(struct vb2_queue *q)
2102 {
2103         struct coda_ctx *ctx = vb2_get_drv_priv(q);
2104         struct coda_dev *dev = ctx->dev;
2105         struct vb2_v4l2_buffer *buf;
2106         bool stop;
2107
2108         stop = ctx->streamon_out && ctx->streamon_cap;
2109
2110         coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
2111
2112         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2113                 ctx->streamon_out = 0;
2114
2115                 coda_bit_stream_end_flag(ctx);
2116
2117                 ctx->qsequence = 0;
2118
2119                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2120                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2121         } else {
2122                 ctx->streamon_cap = 0;
2123
2124                 ctx->osequence = 0;
2125                 ctx->sequence_offset = 0;
2126
2127                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2128                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2129         }
2130
2131         if (stop) {
2132                 struct coda_buffer_meta *meta;
2133
2134                 if (ctx->ops->seq_end_work) {
2135                         queue_work(dev->workqueue, &ctx->seq_end_work);
2136                         flush_work(&ctx->seq_end_work);
2137                 }
2138                 spin_lock(&ctx->buffer_meta_lock);
2139                 while (!list_empty(&ctx->buffer_meta_list)) {
2140                         meta = list_first_entry(&ctx->buffer_meta_list,
2141                                                 struct coda_buffer_meta, list);
2142                         list_del(&meta->list);
2143                         kfree(meta);
2144                 }
2145                 ctx->num_metas = 0;
2146                 spin_unlock(&ctx->buffer_meta_lock);
2147                 kfifo_init(&ctx->bitstream_fifo,
2148                         ctx->bitstream.vaddr, ctx->bitstream.size);
2149                 ctx->runcounter = 0;
2150                 ctx->aborting = 0;
2151                 ctx->hold = false;
2152         }
2153
2154         if (!ctx->streamon_out && !ctx->streamon_cap)
2155                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
2156 }
2157
2158 static const struct vb2_ops coda_qops = {
2159         .queue_setup            = coda_queue_setup,
2160         .buf_prepare            = coda_buf_prepare,
2161         .buf_queue              = coda_buf_queue,
2162         .start_streaming        = coda_start_streaming,
2163         .stop_streaming         = coda_stop_streaming,
2164         .wait_prepare           = vb2_ops_wait_prepare,
2165         .wait_finish            = vb2_ops_wait_finish,
2166 };
2167
2168 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2169 {
2170         const char * const *val_names = v4l2_ctrl_get_menu(ctrl->id);
2171         struct coda_ctx *ctx =
2172                         container_of(ctrl->handler, struct coda_ctx, ctrls);
2173
2174         if (val_names)
2175                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d (\"%s\")\n",
2176                          ctrl->id, ctrl->name, ctrl->val, val_names[ctrl->val]);
2177         else
2178                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
2179                          ctrl->id, ctrl->name, ctrl->val);
2180
2181         switch (ctrl->id) {
2182         case V4L2_CID_HFLIP:
2183                 if (ctrl->val)
2184                         ctx->params.rot_mode |= CODA_MIR_HOR;
2185                 else
2186                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
2187                 break;
2188         case V4L2_CID_VFLIP:
2189                 if (ctrl->val)
2190                         ctx->params.rot_mode |= CODA_MIR_VER;
2191                 else
2192                         ctx->params.rot_mode &= ~CODA_MIR_VER;
2193                 break;
2194         case V4L2_CID_MPEG_VIDEO_BITRATE:
2195                 ctx->params.bitrate = ctrl->val / 1000;
2196                 ctx->params.bitrate_changed = true;
2197                 break;
2198         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2199                 ctx->params.gop_size = ctrl->val;
2200                 break;
2201         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2202                 ctx->params.h264_intra_qp = ctrl->val;
2203                 ctx->params.h264_intra_qp_changed = true;
2204                 break;
2205         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2206                 ctx->params.h264_inter_qp = ctrl->val;
2207                 break;
2208         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
2209                 ctx->params.h264_min_qp = ctrl->val;
2210                 break;
2211         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
2212                 ctx->params.h264_max_qp = ctrl->val;
2213                 break;
2214         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
2215                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
2216                 break;
2217         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
2218                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
2219                 break;
2220         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
2221                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
2222                 break;
2223         case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
2224                 ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
2225                 break;
2226         case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
2227                 ctx->params.frame_rc_enable = ctrl->val;
2228                 break;
2229         case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
2230                 ctx->params.mb_rc_enable = ctrl->val;
2231                 break;
2232         case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
2233                 ctx->params.h264_chroma_qp_index_offset = ctrl->val;
2234                 break;
2235         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
2236                 /* TODO: switch between baseline and constrained baseline */
2237                 if (ctx->inst_type == CODA_INST_ENCODER)
2238                         ctx->params.h264_profile_idc = 66;
2239                 break;
2240         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
2241                 /* nothing to do, this is set by the encoder */
2242                 break;
2243         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2244                 ctx->params.mpeg4_intra_qp = ctrl->val;
2245                 break;
2246         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2247                 ctx->params.mpeg4_inter_qp = ctrl->val;
2248                 break;
2249         case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
2250         case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
2251         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
2252         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
2253                 /* nothing to do, these are fixed */
2254                 break;
2255         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2256                 ctx->params.slice_mode = ctrl->val;
2257                 ctx->params.slice_mode_changed = true;
2258                 break;
2259         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2260                 ctx->params.slice_max_mb = ctrl->val;
2261                 ctx->params.slice_mode_changed = true;
2262                 break;
2263         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2264                 ctx->params.slice_max_bits = ctrl->val * 8;
2265                 ctx->params.slice_mode_changed = true;
2266                 break;
2267         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2268                 break;
2269         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
2270                 ctx->params.intra_refresh = ctrl->val;
2271                 ctx->params.intra_refresh_changed = true;
2272                 break;
2273         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
2274                 ctx->params.force_ipicture = true;
2275                 break;
2276         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
2277                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
2278                 break;
2279         case V4L2_CID_JPEG_RESTART_INTERVAL:
2280                 ctx->params.jpeg_restart_interval = ctrl->val;
2281                 break;
2282         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
2283                 ctx->params.vbv_delay = ctrl->val;
2284                 break;
2285         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
2286                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
2287                 break;
2288         default:
2289                 coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
2290                          ctrl->id, ctrl->val);
2291                 return -EINVAL;
2292         }
2293
2294         return 0;
2295 }
2296
2297 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
2298         .s_ctrl = coda_s_ctrl,
2299 };
2300
2301 static void coda_encode_ctrls(struct coda_ctx *ctx)
2302 {
2303         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
2304
2305         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2306                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
2307         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2308                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
2309         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2310                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
2311         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2312                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
2313         if (ctx->dev->devtype->product != CODA_960) {
2314                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2315                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
2316         }
2317         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2318                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
2319         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2320                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
2321         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2322                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
2323         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2324                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
2325                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
2326                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
2327         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2328                 V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
2329                 0);
2330         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2331                 V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);
2332         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2333                 V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE, 0, 1, 1, 1);
2334         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2335                 V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
2336         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2337                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2338                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,
2339                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
2340         if (ctx->dev->devtype->product == CODA_HX4 ||
2341             ctx->dev->devtype->product == CODA_7541) {
2342                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2343                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2344                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2345                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2346                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2347                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2348                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2349         }
2350         if (ctx->dev->devtype->product == CODA_960) {
2351                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2352                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2353                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
2354                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2355                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2356                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2357                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2358                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
2359                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
2360         }
2361         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2362                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2363         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2364                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2365         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2366                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2367                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
2368                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
2369         if (ctx->dev->devtype->product == CODA_HX4 ||
2370             ctx->dev->devtype->product == CODA_7541 ||
2371             ctx->dev->devtype->product == CODA_960) {
2372                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2373                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2374                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
2375                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
2376                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2377         }
2378         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2379                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2380                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES, 0x0,
2381                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2382         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2383                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2384         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2385                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
2386                 500);
2387         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2388                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2389                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2390                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2391                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2392         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2393                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
2394                 1920 * 1088 / 256, 1, 0);
2395         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2396                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
2397         /*
2398          * The maximum VBV size value is 0x7fffffff bits,
2399          * one bit less than 262144 KiB
2400          */
2401         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2402                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
2403 }
2404
2405 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
2406 {
2407         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2408                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
2409         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2410                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
2411 }
2412
2413 static void coda_decode_ctrls(struct coda_ctx *ctx)
2414 {
2415         u8 max;
2416
2417         ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2418                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2419                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
2420                 ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
2421                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
2422                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
2423                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
2424         if (ctx->h264_profile_ctrl)
2425                 ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2426
2427         if (ctx->dev->devtype->product == CODA_HX4 ||
2428             ctx->dev->devtype->product == CODA_7541)
2429                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
2430         else if (ctx->dev->devtype->product == CODA_960)
2431                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
2432         else
2433                 return;
2434         ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2435                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, 0, max);
2436         if (ctx->h264_level_ctrl)
2437                 ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2438
2439         ctx->mpeg2_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2440                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE,
2441                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH, 0,
2442                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH);
2443         if (ctx->mpeg2_profile_ctrl)
2444                 ctx->mpeg2_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2445
2446         ctx->mpeg2_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2447                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL,
2448                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH, 0,
2449                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH);
2450         if (ctx->mpeg2_level_ctrl)
2451                 ctx->mpeg2_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2452
2453         ctx->mpeg4_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2454                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2455                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY, 0,
2456                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY);
2457         if (ctx->mpeg4_profile_ctrl)
2458                 ctx->mpeg4_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2459
2460         ctx->mpeg4_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2461                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2462                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5, 0,
2463                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2464         if (ctx->mpeg4_level_ctrl)
2465                 ctx->mpeg4_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2466 }
2467
2468 static const struct v4l2_ctrl_config coda_mb_err_cnt_ctrl_config = {
2469         .id     = V4L2_CID_CODA_MB_ERR_CNT,
2470         .name   = "Macroblocks Error Count",
2471         .type   = V4L2_CTRL_TYPE_INTEGER,
2472         .min    = 0,
2473         .max    = 0x7fffffff,
2474         .step   = 1,
2475 };
2476
2477 static int coda_ctrls_setup(struct coda_ctx *ctx)
2478 {
2479         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2480
2481         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2482                 V4L2_CID_HFLIP, 0, 1, 1, 0);
2483         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2484                 V4L2_CID_VFLIP, 0, 1, 1, 0);
2485         if (ctx->inst_type == CODA_INST_ENCODER) {
2486                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2487                                   V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
2488                                   1, 1, 1, 1);
2489                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2490                         coda_jpeg_encode_ctrls(ctx);
2491                 else
2492                         coda_encode_ctrls(ctx);
2493         } else {
2494                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2495                                   V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
2496                                   1, 1, 1, 1);
2497                 if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2498                         coda_decode_ctrls(ctx);
2499
2500                 ctx->mb_err_cnt_ctrl = v4l2_ctrl_new_custom(&ctx->ctrls,
2501                                                 &coda_mb_err_cnt_ctrl_config,
2502                                                 NULL);
2503                 if (ctx->mb_err_cnt_ctrl)
2504                         ctx->mb_err_cnt_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2505         }
2506
2507         if (ctx->ctrls.error) {
2508                 v4l2_err(&ctx->dev->v4l2_dev,
2509                         "control initialization error (%d)",
2510                         ctx->ctrls.error);
2511                 return -EINVAL;
2512         }
2513
2514         return v4l2_ctrl_handler_setup(&ctx->ctrls);
2515 }
2516
2517 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2518 {
2519         vq->drv_priv = ctx;
2520         vq->ops = &coda_qops;
2521         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2522         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2523         vq->lock = &ctx->dev->dev_mutex;
2524         /* One way to indicate end-of-stream for coda is to set the
2525          * bytesused == 0. However by default videobuf2 handles bytesused
2526          * equal to 0 as a special case and changes its value to the size
2527          * of the buffer. Set the allow_zero_bytesused flag, so
2528          * that videobuf2 will keep the value of bytesused intact.
2529          */
2530         vq->allow_zero_bytesused = 1;
2531         /*
2532          * We might be fine with no buffers on some of the queues, but that
2533          * would need to be reflected in job_ready(). Currently we expect all
2534          * queues to have at least one buffer queued.
2535          */
2536         vq->min_buffers_needed = 1;
2537         vq->dev = ctx->dev->dev;
2538
2539         return vb2_queue_init(vq);
2540 }
2541
2542 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2543                             struct vb2_queue *dst_vq)
2544 {
2545         int ret;
2546
2547         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2548         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2549         src_vq->mem_ops = &vb2_dma_contig_memops;
2550
2551         ret = coda_queue_init(priv, src_vq);
2552         if (ret)
2553                 return ret;
2554
2555         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2556         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2557         dst_vq->mem_ops = &vb2_dma_contig_memops;
2558
2559         return coda_queue_init(priv, dst_vq);
2560 }
2561
2562 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2563                             struct vb2_queue *dst_vq)
2564 {
2565         int ret;
2566
2567         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2568         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2569         src_vq->mem_ops = &vb2_vmalloc_memops;
2570
2571         ret = coda_queue_init(priv, src_vq);
2572         if (ret)
2573                 return ret;
2574
2575         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2576         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2577         dst_vq->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING;
2578         dst_vq->mem_ops = &vb2_dma_contig_memops;
2579
2580         return coda_queue_init(priv, dst_vq);
2581 }
2582
2583 /*
2584  * File operations
2585  */
2586
2587 static int coda_open(struct file *file)
2588 {
2589         struct video_device *vdev = video_devdata(file);
2590         struct coda_dev *dev = video_get_drvdata(vdev);
2591         struct coda_ctx *ctx;
2592         unsigned int max = ~0;
2593         char *name;
2594         int ret;
2595         int idx;
2596
2597         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2598         if (!ctx)
2599                 return -ENOMEM;
2600
2601         if (dev->devtype->product == CODA_DX6)
2602                 max = CODADX6_MAX_INSTANCES - 1;
2603         idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2604         if (idx < 0) {
2605                 ret = idx;
2606                 goto err_coda_max;
2607         }
2608
2609         name = kasprintf(GFP_KERNEL, "context%d", idx);
2610         if (!name) {
2611                 ret = -ENOMEM;
2612                 goto err_coda_name_init;
2613         }
2614
2615         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2616         kfree(name);
2617
2618         ctx->cvd = to_coda_video_device(vdev);
2619         ctx->inst_type = ctx->cvd->type;
2620         ctx->ops = ctx->cvd->ops;
2621         ctx->use_bit = !ctx->cvd->direct;
2622         init_completion(&ctx->completion);
2623         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2624         if (ctx->ops->seq_init_work)
2625                 INIT_WORK(&ctx->seq_init_work, ctx->ops->seq_init_work);
2626         if (ctx->ops->seq_end_work)
2627                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2628         v4l2_fh_init(&ctx->fh, video_devdata(file));
2629         file->private_data = &ctx->fh;
2630         v4l2_fh_add(&ctx->fh);
2631         ctx->dev = dev;
2632         ctx->idx = idx;
2633
2634         coda_dbg(1, ctx, "open instance (%p)\n", ctx);
2635
2636         switch (dev->devtype->product) {
2637         case CODA_960:
2638                 /*
2639                  * Enabling the BWB when decoding can hang the firmware with
2640                  * certain streams. The issue was tracked as ENGR00293425 by
2641                  * Freescale. As a workaround, disable BWB for all decoders.
2642                  * The enable_bwb module parameter allows to override this.
2643                  */
2644                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2645                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2646                 fallthrough;
2647         case CODA_HX4:
2648         case CODA_7541:
2649                 ctx->reg_idx = 0;
2650                 break;
2651         default:
2652                 ctx->reg_idx = idx;
2653         }
2654         if (ctx->dev->vdoa && !disable_vdoa) {
2655                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2656                 if (!ctx->vdoa)
2657                         v4l2_warn(&dev->v4l2_dev,
2658                                   "Failed to create vdoa context: not using vdoa");
2659         }
2660         ctx->use_vdoa = false;
2661
2662         /* Power up and upload firmware if necessary */
2663         ret = pm_runtime_get_sync(dev->dev);
2664         if (ret < 0) {
2665                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2666                 goto err_pm_get;
2667         }
2668
2669         ret = clk_prepare_enable(dev->clk_per);
2670         if (ret)
2671                 goto err_pm_get;
2672
2673         ret = clk_prepare_enable(dev->clk_ahb);
2674         if (ret)
2675                 goto err_clk_ahb;
2676
2677         set_default_params(ctx);
2678         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2679                                             ctx->ops->queue_init);
2680         if (IS_ERR(ctx->fh.m2m_ctx)) {
2681                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2682
2683                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2684                          __func__, ret);
2685                 goto err_ctx_init;
2686         }
2687
2688         ret = coda_ctrls_setup(ctx);
2689         if (ret) {
2690                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2691                 goto err_ctrls_setup;
2692         }
2693
2694         ctx->fh.ctrl_handler = &ctx->ctrls;
2695
2696         mutex_init(&ctx->bitstream_mutex);
2697         mutex_init(&ctx->buffer_mutex);
2698         mutex_init(&ctx->wakeup_mutex);
2699         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2700         spin_lock_init(&ctx->buffer_meta_lock);
2701
2702         return 0;
2703
2704 err_ctrls_setup:
2705         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2706 err_ctx_init:
2707         clk_disable_unprepare(dev->clk_ahb);
2708 err_clk_ahb:
2709         clk_disable_unprepare(dev->clk_per);
2710 err_pm_get:
2711         pm_runtime_put_sync(dev->dev);
2712         v4l2_fh_del(&ctx->fh);
2713         v4l2_fh_exit(&ctx->fh);
2714 err_coda_name_init:
2715         ida_free(&dev->ida, ctx->idx);
2716 err_coda_max:
2717         kfree(ctx);
2718         return ret;
2719 }
2720
2721 static int coda_release(struct file *file)
2722 {
2723         struct coda_dev *dev = video_drvdata(file);
2724         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2725
2726         coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2727
2728         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2729                 coda_bit_stream_end_flag(ctx);
2730
2731         /* If this instance is running, call .job_abort and wait for it to end */
2732         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2733
2734         if (ctx->vdoa)
2735                 vdoa_context_destroy(ctx->vdoa);
2736
2737         /* In case the instance was not running, we still need to call SEQ_END */
2738         if (ctx->ops->seq_end_work) {
2739                 queue_work(dev->workqueue, &ctx->seq_end_work);
2740                 flush_work(&ctx->seq_end_work);
2741         }
2742
2743         if (ctx->dev->devtype->product == CODA_DX6)
2744                 coda_free_aux_buf(dev, &ctx->workbuf);
2745
2746         v4l2_ctrl_handler_free(&ctx->ctrls);
2747         clk_disable_unprepare(dev->clk_ahb);
2748         clk_disable_unprepare(dev->clk_per);
2749         pm_runtime_put_sync(dev->dev);
2750         v4l2_fh_del(&ctx->fh);
2751         v4l2_fh_exit(&ctx->fh);
2752         ida_free(&dev->ida, ctx->idx);
2753         if (ctx->ops->release)
2754                 ctx->ops->release(ctx);
2755         debugfs_remove_recursive(ctx->debugfs_entry);
2756         kfree(ctx);
2757
2758         return 0;
2759 }
2760
2761 static const struct v4l2_file_operations coda_fops = {
2762         .owner          = THIS_MODULE,
2763         .open           = coda_open,
2764         .release        = coda_release,
2765         .poll           = v4l2_m2m_fop_poll,
2766         .unlocked_ioctl = video_ioctl2,
2767         .mmap           = v4l2_m2m_fop_mmap,
2768 };
2769
2770 static int coda_hw_init(struct coda_dev *dev)
2771 {
2772         u32 data;
2773         u16 *p;
2774         int i, ret;
2775
2776         ret = clk_prepare_enable(dev->clk_per);
2777         if (ret)
2778                 goto err_clk_per;
2779
2780         ret = clk_prepare_enable(dev->clk_ahb);
2781         if (ret)
2782                 goto err_clk_ahb;
2783
2784         reset_control_reset(dev->rstc);
2785
2786         /*
2787          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2788          * The 16-bit chars in the code buffer are in memory access
2789          * order, re-sort them to CODA order for register download.
2790          * Data in this SRAM survives a reboot.
2791          */
2792         p = (u16 *)dev->codebuf.vaddr;
2793         if (dev->devtype->product == CODA_DX6) {
2794                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2795                         data = CODA_DOWN_ADDRESS_SET(i) |
2796                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2797                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2798                 }
2799         } else {
2800                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2801                         data = CODA_DOWN_ADDRESS_SET(i) |
2802                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2803                                                         3 - (i % 4)]);
2804                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2805                 }
2806         }
2807
2808         /* Clear registers */
2809         for (i = 0; i < 64; i++)
2810                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2811
2812         /* Tell the BIT where to find everything it needs */
2813         if (dev->devtype->product == CODA_960 ||
2814             dev->devtype->product == CODA_7541 ||
2815             dev->devtype->product == CODA_HX4) {
2816                 coda_write(dev, dev->tempbuf.paddr,
2817                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2818                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2819         } else {
2820                 coda_write(dev, dev->workbuf.paddr,
2821                               CODA_REG_BIT_WORK_BUF_ADDR);
2822         }
2823         coda_write(dev, dev->codebuf.paddr,
2824                       CODA_REG_BIT_CODE_BUF_ADDR);
2825         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2826
2827         /* Set default values */
2828         switch (dev->devtype->product) {
2829         case CODA_DX6:
2830                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2831                            CODA_REG_BIT_STREAM_CTRL);
2832                 break;
2833         default:
2834                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2835                            CODA_REG_BIT_STREAM_CTRL);
2836         }
2837         if (dev->devtype->product == CODA_960)
2838                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2839                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2840         else
2841                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2842
2843         if (dev->devtype->product != CODA_DX6)
2844                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2845
2846         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2847                       CODA_REG_BIT_INT_ENABLE);
2848
2849         /* Reset VPU and start processor */
2850         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2851         data |= CODA_REG_RESET_ENABLE;
2852         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2853         udelay(10);
2854         data &= ~CODA_REG_RESET_ENABLE;
2855         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2856         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2857
2858         clk_disable_unprepare(dev->clk_ahb);
2859         clk_disable_unprepare(dev->clk_per);
2860
2861         return 0;
2862
2863 err_clk_ahb:
2864         clk_disable_unprepare(dev->clk_per);
2865 err_clk_per:
2866         return ret;
2867 }
2868
2869 static int coda_register_device(struct coda_dev *dev, int i)
2870 {
2871         struct video_device *vfd = &dev->vfd[i];
2872         const char *name;
2873         int ret;
2874
2875         if (i >= dev->devtype->num_vdevs)
2876                 return -EINVAL;
2877         name = dev->devtype->vdevs[i]->name;
2878
2879         strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2880         vfd->fops       = &coda_fops;
2881         vfd->ioctl_ops  = &coda_ioctl_ops;
2882         vfd->release    = video_device_release_empty;
2883         vfd->lock       = &dev->dev_mutex;
2884         vfd->v4l2_dev   = &dev->v4l2_dev;
2885         vfd->vfl_dir    = VFL_DIR_M2M;
2886         vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
2887         video_set_drvdata(vfd, dev);
2888
2889         /* Not applicable, use the selection API instead */
2890         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2891         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2892         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2893
2894         ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2895         if (!ret)
2896                 v4l2_info(&dev->v4l2_dev, "%s registered as %s\n",
2897                           name, video_device_node_name(vfd));
2898         return ret;
2899 }
2900
2901 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2902                                size_t size)
2903 {
2904         u32 *src = (u32 *)buf;
2905
2906         /* Check if the firmware has a 16-byte Freescale header, skip it */
2907         if (buf[0] == 'M' && buf[1] == 'X')
2908                 src += 4;
2909         /*
2910          * Check whether the firmware is in native order or pre-reordered for
2911          * memory access. The first instruction opcode always is 0xe40e.
2912          */
2913         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2914                 u32 *dst = dev->codebuf.vaddr;
2915                 int i;
2916
2917                 /* Firmware in native order, reorder while copying */
2918                 if (dev->devtype->product == CODA_DX6) {
2919                         for (i = 0; i < (size - 16) / 4; i++)
2920                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2921                 } else {
2922                         for (i = 0; i < (size - 16) / 4; i += 2) {
2923                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2924                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2925                         }
2926                 }
2927         } else {
2928                 /* Copy the already reordered firmware image */
2929                 memcpy(dev->codebuf.vaddr, src, size);
2930         }
2931 }
2932
2933 static void coda_fw_callback(const struct firmware *fw, void *context);
2934
2935 static int coda_firmware_request(struct coda_dev *dev)
2936 {
2937         char *fw;
2938
2939         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2940                 return -EINVAL;
2941
2942         fw = dev->devtype->firmware[dev->firmware];
2943
2944         dev_dbg(dev->dev, "requesting firmware '%s' for %s\n", fw,
2945                 coda_product_name(dev->devtype->product));
2946
2947         return request_firmware_nowait(THIS_MODULE, true, fw, dev->dev,
2948                                        GFP_KERNEL, dev, coda_fw_callback);
2949 }
2950
2951 static void coda_fw_callback(const struct firmware *fw, void *context)
2952 {
2953         struct coda_dev *dev = context;
2954         int i, ret;
2955
2956         if (!fw) {
2957                 dev->firmware++;
2958                 ret = coda_firmware_request(dev);
2959                 if (ret < 0) {
2960                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2961                         goto put_pm;
2962                 }
2963                 return;
2964         }
2965         if (dev->firmware > 0) {
2966                 /*
2967                  * Since we can't suppress warnings for failed asynchronous
2968                  * firmware requests, report that the fallback firmware was
2969                  * found.
2970                  */
2971                 dev_info(dev->dev, "Using fallback firmware %s\n",
2972                          dev->devtype->firmware[dev->firmware]);
2973         }
2974
2975         /* allocate auxiliary per-device code buffer for the BIT processor */
2976         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2977                                  dev->debugfs_root);
2978         if (ret < 0)
2979                 goto put_pm;
2980
2981         coda_copy_firmware(dev, fw->data, fw->size);
2982         release_firmware(fw);
2983
2984         ret = coda_hw_init(dev);
2985         if (ret < 0) {
2986                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2987                 goto put_pm;
2988         }
2989
2990         ret = coda_check_firmware(dev);
2991         if (ret < 0)
2992                 goto put_pm;
2993
2994         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
2995         if (IS_ERR(dev->m2m_dev)) {
2996                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
2997                 goto put_pm;
2998         }
2999
3000         for (i = 0; i < dev->devtype->num_vdevs; i++) {
3001                 ret = coda_register_device(dev, i);
3002                 if (ret) {
3003                         v4l2_err(&dev->v4l2_dev,
3004                                  "Failed to register %s video device: %d\n",
3005                                  dev->devtype->vdevs[i]->name, ret);
3006                         goto rel_vfd;
3007                 }
3008         }
3009
3010         pm_runtime_put_sync(dev->dev);
3011         return;
3012
3013 rel_vfd:
3014         while (--i >= 0)
3015                 video_unregister_device(&dev->vfd[i]);
3016         v4l2_m2m_release(dev->m2m_dev);
3017 put_pm:
3018         pm_runtime_put_sync(dev->dev);
3019 }
3020
3021 enum coda_platform {
3022         CODA_IMX27,
3023         CODA_IMX51,
3024         CODA_IMX53,
3025         CODA_IMX6Q,
3026         CODA_IMX6DL,
3027 };
3028
3029 static const struct coda_devtype coda_devdata[] = {
3030         [CODA_IMX27] = {
3031                 .firmware     = {
3032                         "vpu_fw_imx27_TO2.bin",
3033                         "vpu/vpu_fw_imx27_TO2.bin",
3034                         "v4l-codadx6-imx27.bin"
3035                 },
3036                 .product      = CODA_DX6,
3037                 .codecs       = codadx6_codecs,
3038                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
3039                 .vdevs        = codadx6_video_devices,
3040                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
3041                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
3042                 .iram_size    = 0xb000,
3043         },
3044         [CODA_IMX51] = {
3045                 .firmware     = {
3046                         "vpu_fw_imx51.bin",
3047                         "vpu/vpu_fw_imx51.bin",
3048                         "v4l-codahx4-imx51.bin"
3049                 },
3050                 .product      = CODA_HX4,
3051                 .codecs       = codahx4_codecs,
3052                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
3053                 .vdevs        = codahx4_video_devices,
3054                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
3055                 .workbuf_size = 128 * 1024,
3056                 .tempbuf_size = 304 * 1024,
3057                 .iram_size    = 0x14000,
3058         },
3059         [CODA_IMX53] = {
3060                 .firmware     = {
3061                         "vpu_fw_imx53.bin",
3062                         "vpu/vpu_fw_imx53.bin",
3063                         "v4l-coda7541-imx53.bin"
3064                 },
3065                 .product      = CODA_7541,
3066                 .codecs       = coda7_codecs,
3067                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
3068                 .vdevs        = coda7_video_devices,
3069                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
3070                 .workbuf_size = 128 * 1024,
3071                 .tempbuf_size = 304 * 1024,
3072                 .iram_size    = 0x14000,
3073         },
3074         [CODA_IMX6Q] = {
3075                 .firmware     = {
3076                         "vpu_fw_imx6q.bin",
3077                         "vpu/vpu_fw_imx6q.bin",
3078                         "v4l-coda960-imx6q.bin"
3079                 },
3080                 .product      = CODA_960,
3081                 .codecs       = coda9_codecs,
3082                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3083                 .vdevs        = coda9_video_devices,
3084                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3085                 .workbuf_size = 80 * 1024,
3086                 .tempbuf_size = 204 * 1024,
3087                 .iram_size    = 0x21000,
3088         },
3089         [CODA_IMX6DL] = {
3090                 .firmware     = {
3091                         "vpu_fw_imx6d.bin",
3092                         "vpu/vpu_fw_imx6d.bin",
3093                         "v4l-coda960-imx6dl.bin"
3094                 },
3095                 .product      = CODA_960,
3096                 .codecs       = coda9_codecs,
3097                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3098                 .vdevs        = coda9_video_devices,
3099                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3100                 .workbuf_size = 80 * 1024,
3101                 .tempbuf_size = 204 * 1024,
3102                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
3103         },
3104 };
3105
3106 static const struct of_device_id coda_dt_ids[] = {
3107         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3108         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
3109         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3110         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
3111         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
3112         { /* sentinel */ }
3113 };
3114 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3115
3116 static int coda_probe(struct platform_device *pdev)
3117 {
3118         struct device_node *np = pdev->dev.of_node;
3119         struct gen_pool *pool;
3120         struct coda_dev *dev;
3121         int ret, irq;
3122
3123         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
3124         if (!dev)
3125                 return -ENOMEM;
3126
3127         dev->devtype = of_device_get_match_data(&pdev->dev);
3128
3129         dev->dev = &pdev->dev;
3130         dev->clk_per = devm_clk_get(&pdev->dev, "per");
3131         if (IS_ERR(dev->clk_per)) {
3132                 dev_err(&pdev->dev, "Could not get per clock\n");
3133                 return PTR_ERR(dev->clk_per);
3134         }
3135
3136         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3137         if (IS_ERR(dev->clk_ahb)) {
3138                 dev_err(&pdev->dev, "Could not get ahb clock\n");
3139                 return PTR_ERR(dev->clk_ahb);
3140         }
3141
3142         /* Get  memory for physical registers */
3143         dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
3144         if (IS_ERR(dev->regs_base))
3145                 return PTR_ERR(dev->regs_base);
3146
3147         /* IRQ */
3148         irq = platform_get_irq_byname(pdev, "bit");
3149         if (irq < 0)
3150                 irq = platform_get_irq(pdev, 0);
3151         if (irq < 0)
3152                 return irq;
3153
3154         ret = devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0,
3155                                CODA_NAME "-video", dev);
3156         if (ret < 0) {
3157                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
3158                 return ret;
3159         }
3160
3161         /* JPEG IRQ */
3162         if (dev->devtype->product == CODA_960) {
3163                 irq = platform_get_irq_byname(pdev, "jpeg");
3164                 if (irq < 0)
3165                         return irq;
3166
3167                 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
3168                                                 coda9_jpeg_irq_handler,
3169                                                 IRQF_ONESHOT, CODA_NAME "-jpeg",
3170                                                 dev);
3171                 if (ret < 0) {
3172                         dev_err(&pdev->dev, "failed to request jpeg irq\n");
3173                         return ret;
3174                 }
3175         }
3176
3177         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
3178                                                               NULL);
3179         if (IS_ERR(dev->rstc)) {
3180                 ret = PTR_ERR(dev->rstc);
3181                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
3182                 return ret;
3183         }
3184
3185         /* Get IRAM pool from device tree */
3186         pool = of_gen_pool_get(np, "iram", 0);
3187         if (!pool) {
3188                 dev_err(&pdev->dev, "iram pool not available\n");
3189                 return -ENOMEM;
3190         }
3191         dev->iram_pool = pool;
3192
3193         /* Get vdoa_data if supported by the platform */
3194         dev->vdoa = coda_get_vdoa_data();
3195         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
3196                 return -EPROBE_DEFER;
3197
3198         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3199         if (ret)
3200                 return ret;
3201
3202         ratelimit_default_init(&dev->mb_err_rs);
3203         mutex_init(&dev->dev_mutex);
3204         mutex_init(&dev->coda_mutex);
3205         ida_init(&dev->ida);
3206
3207         dev->debugfs_root = debugfs_create_dir("coda", NULL);
3208
3209         /* allocate auxiliary per-device buffers for the BIT processor */
3210         if (dev->devtype->product == CODA_DX6) {
3211                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3212                                          dev->devtype->workbuf_size, "workbuf",
3213                                          dev->debugfs_root);
3214                 if (ret < 0)
3215                         goto err_v4l2_register;
3216         }
3217
3218         if (dev->devtype->tempbuf_size) {
3219                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3220                                          dev->devtype->tempbuf_size, "tempbuf",
3221                                          dev->debugfs_root);
3222                 if (ret < 0)
3223                         goto err_v4l2_register;
3224         }
3225
3226         dev->iram.size = dev->devtype->iram_size;
3227         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
3228                                              &dev->iram.paddr);
3229         if (!dev->iram.vaddr) {
3230                 dev_warn(&pdev->dev, "unable to alloc iram\n");
3231         } else {
3232                 memset(dev->iram.vaddr, 0, dev->iram.size);
3233                 dev->iram.blob.data = dev->iram.vaddr;
3234                 dev->iram.blob.size = dev->iram.size;
3235                 dev->iram.dentry = debugfs_create_blob("iram", 0644,
3236                                                        dev->debugfs_root,
3237                                                        &dev->iram.blob);
3238         }
3239
3240         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
3241         if (!dev->workqueue) {
3242                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
3243                 ret = -ENOMEM;
3244                 goto err_v4l2_register;
3245         }
3246
3247         platform_set_drvdata(pdev, dev);
3248
3249         /*
3250          * Start activated so we can directly call coda_hw_init in
3251          * coda_fw_callback regardless of whether CONFIG_PM is
3252          * enabled or whether the device is associated with a PM domain.
3253          */
3254         pm_runtime_get_noresume(&pdev->dev);
3255         pm_runtime_set_active(&pdev->dev);
3256         pm_runtime_enable(&pdev->dev);
3257
3258         ret = coda_firmware_request(dev);
3259         if (ret)
3260                 goto err_alloc_workqueue;
3261         return 0;
3262
3263 err_alloc_workqueue:
3264         pm_runtime_disable(&pdev->dev);
3265         pm_runtime_put_noidle(&pdev->dev);
3266         destroy_workqueue(dev->workqueue);
3267 err_v4l2_register:
3268         v4l2_device_unregister(&dev->v4l2_dev);
3269         return ret;
3270 }
3271
3272 static int coda_remove(struct platform_device *pdev)
3273 {
3274         struct coda_dev *dev = platform_get_drvdata(pdev);
3275         int i;
3276
3277         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
3278                 if (video_get_drvdata(&dev->vfd[i]))
3279                         video_unregister_device(&dev->vfd[i]);
3280         }
3281         if (dev->m2m_dev)
3282                 v4l2_m2m_release(dev->m2m_dev);
3283         pm_runtime_disable(&pdev->dev);
3284         v4l2_device_unregister(&dev->v4l2_dev);
3285         destroy_workqueue(dev->workqueue);
3286         if (dev->iram.vaddr)
3287                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
3288                               dev->iram.size);
3289         coda_free_aux_buf(dev, &dev->codebuf);
3290         coda_free_aux_buf(dev, &dev->tempbuf);
3291         coda_free_aux_buf(dev, &dev->workbuf);
3292         debugfs_remove_recursive(dev->debugfs_root);
3293         ida_destroy(&dev->ida);
3294         return 0;
3295 }
3296
3297 #ifdef CONFIG_PM
3298 static int coda_runtime_resume(struct device *dev)
3299 {
3300         struct coda_dev *cdev = dev_get_drvdata(dev);
3301         int ret = 0;
3302
3303         if (dev->pm_domain && cdev->codebuf.vaddr) {
3304                 ret = coda_hw_init(cdev);
3305                 if (ret)
3306                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
3307         }
3308
3309         return ret;
3310 }
3311 #endif
3312
3313 static const struct dev_pm_ops coda_pm_ops = {
3314         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
3315 };
3316
3317 static struct platform_driver coda_driver = {
3318         .probe  = coda_probe,
3319         .remove = coda_remove,
3320         .driver = {
3321                 .name   = CODA_NAME,
3322                 .of_match_table = coda_dt_ids,
3323                 .pm     = &coda_pm_ops,
3324         },
3325 };
3326
3327 module_platform_driver(coda_driver);
3328
3329 MODULE_LICENSE("GPL");
3330 MODULE_AUTHOR("Javier Martin <[email protected]>");
3331 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");