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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Coda multi-standard codec IP
   4  *
   5  * Copyright (C) 2012 Vista Silicon S.L.
   6  *    Javier Martin, <javier.martin@vista-silicon.com>
   7  *    Xavier Duret
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/delay.h>
  13 #include <linux/firmware.h>
  14 #include <linux/gcd.h>
  15 #include <linux/genalloc.h>
  16 #include <linux/idr.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/irq.h>
  20 #include <linux/kfifo.h>
  21 #include <linux/module.h>
  22 #include <linux/of_device.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/of.h>
  28 #include <linux/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        5
  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                 V4L2_PIX_FMT_GREY,
 251         },
 252         .dst_formats = {
 253                 V4L2_PIX_FMT_JPEG,
 254         },
 255 };
 256
 257 static const struct coda_video_device coda9_jpeg_decoder = {
 258         .name = "coda-jpeg-decoder",
 259         .type = CODA_INST_DECODER,
 260         .ops = &coda9_jpeg_decode_ops,
 261         .direct = true,
 262         .src_formats = {
 263                 V4L2_PIX_FMT_JPEG,
 264         },
 265         .dst_formats = {
 266                 V4L2_PIX_FMT_NV12,
 267                 V4L2_PIX_FMT_YUV420,
 268                 V4L2_PIX_FMT_YVU420,
 269                 V4L2_PIX_FMT_YUV422P,
 270         },
 271 };
 272
 273 static const struct coda_video_device *codadx6_video_devices[] = {
 274         &coda_bit_encoder,
 275 };
 276
 277 static const struct coda_video_device *codahx4_video_devices[] = {
 278         &coda_bit_encoder,
 279         &coda_bit_decoder,
 280 };
 281
 282 static const struct coda_video_device *coda7_video_devices[] = {
 283         &coda_bit_jpeg_encoder,
 284         &coda_bit_jpeg_decoder,
 285         &coda_bit_encoder,
 286         &coda_bit_decoder,
 287 };
 288
 289 static const struct coda_video_device *coda9_video_devices[] = {
 290         &coda9_jpeg_encoder,
 291         &coda9_jpeg_decoder,
 292         &coda_bit_encoder,
 293         &coda_bit_decoder,
 294 };
 295
 296 /*
 297  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 298  * tables.
 299  */
 300 static u32 coda_format_normalize_yuv(u32 fourcc)
 301 {
 302         switch (fourcc) {
 303         case V4L2_PIX_FMT_NV12:
 304         case V4L2_PIX_FMT_YUV420:
 305         case V4L2_PIX_FMT_YVU420:
 306         case V4L2_PIX_FMT_YUV422P:
 307         case V4L2_PIX_FMT_YUYV:
 308                 return V4L2_PIX_FMT_YUV420;
 309         default:
 310                 return fourcc;
 311         }
 312 }
 313
 314 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 315                                                 int src_fourcc, int dst_fourcc)
 316 {
 317         const struct coda_codec *codecs = dev->devtype->codecs;
 318         int num_codecs = dev->devtype->num_codecs;
 319         int k;
 320
 321         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 322         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 323         if (src_fourcc == dst_fourcc)
 324                 return NULL;
 325
 326         for (k = 0; k < num_codecs; k++) {
 327                 if (codecs[k].src_fourcc == src_fourcc &&
 328                     codecs[k].dst_fourcc == dst_fourcc)
 329                         break;
 330         }
 331
 332         if (k == num_codecs)
 333                 return NULL;
 334
 335         return &codecs[k];
 336 }
 337
 338 static void coda_get_max_dimensions(struct coda_dev *dev,
 339                                     const struct coda_codec *codec,
 340                                     int *max_w, int *max_h)
 341 {
 342         const struct coda_codec *codecs = dev->devtype->codecs;
 343         int num_codecs = dev->devtype->num_codecs;
 344         unsigned int w, h;
 345         int k;
 346
 347         if (codec) {
 348                 w = codec->max_w;
 349                 h = codec->max_h;
 350         } else {
 351                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 352                         w = max(w, codecs[k].max_w);
 353                         h = max(h, codecs[k].max_h);
 354                 }
 355         }
 356
 357         if (max_w)
 358                 *max_w = w;
 359         if (max_h)
 360                 *max_h = h;
 361 }
 362
 363 static const struct coda_video_device *to_coda_video_device(struct video_device
 364                                                             *vdev)
 365 {
 366         struct coda_dev *dev = video_get_drvdata(vdev);
 367         unsigned int i = vdev - dev->vfd;
 368
 369         if (i >= dev->devtype->num_vdevs)
 370                 return NULL;
 371
 372         return dev->devtype->vdevs[i];
 373 }
 374
 375 const char *coda_product_name(int product)
 376 {
 377         static char buf[9];
 378
 379         switch (product) {
 380         case CODA_DX6:
 381                 return "CodaDx6";
 382         case CODA_HX4:
 383                 return "CodaHx4";
 384         case CODA_7541:
 385                 return "CODA7541";
 386         case CODA_960:
 387                 return "CODA960";
 388         default:
 389                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 390                 return buf;
 391         }
 392 }
 393
 394 static struct vdoa_data *coda_get_vdoa_data(void)
 395 {
 396         struct device_node *vdoa_node;
 397         struct platform_device *vdoa_pdev;
 398         struct vdoa_data *vdoa_data = NULL;
 399
 400         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 401         if (!vdoa_node)
 402                 return NULL;
 403
 404         vdoa_pdev = of_find_device_by_node(vdoa_node);
 405         if (!vdoa_pdev)
 406                 goto out;
 407
 408         vdoa_data = platform_get_drvdata(vdoa_pdev);
 409         if (!vdoa_data)
 410                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 411
 412         put_device(&vdoa_pdev->dev);
 413 out:
 414         of_node_put(vdoa_node);
 415
 416         return vdoa_data;
 417 }
 418
 419 /*
 420  * V4L2 ioctl() operations.
 421  */
 422 static int coda_querycap(struct file *file, void *priv,
 423                          struct v4l2_capability *cap)
 424 {
 425         struct coda_ctx *ctx = fh_to_ctx(priv);
 426
 427         strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 428         strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 429                 sizeof(cap->card));
 430         strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 431         return 0;
 432 }
 433
 434 static const u32 coda_formats_420[CODA_MAX_FORMATS] = {
 435                 V4L2_PIX_FMT_NV12,
 436                 V4L2_PIX_FMT_YUV420,
 437                 V4L2_PIX_FMT_YVU420,
 438 };
 439
 440 static int coda_enum_fmt(struct file *file, void *priv,
 441                          struct v4l2_fmtdesc *f)
 442 {
 443         struct video_device *vdev = video_devdata(file);
 444         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 445         struct coda_ctx *ctx = fh_to_ctx(priv);
 446         const u32 *formats;
 447
 448         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 449                 formats = cvd->src_formats;
 450         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 451                 struct coda_q_data *q_data_src;
 452                 struct vb2_queue *src_vq;
 453
 454                 formats = cvd->dst_formats;
 455
 456                 /*
 457                  * If the source format is already fixed, only allow the same
 458                  * chroma subsampling.
 459                  */
 460                 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 461                 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
 462                                          V4L2_BUF_TYPE_VIDEO_OUTPUT);
 463                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 464                     vb2_is_streaming(src_vq)) {
 465                         if (ctx->params.jpeg_chroma_subsampling ==
 466                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
 467                                 formats = coda_formats_420;
 468                         } else if (ctx->params.jpeg_chroma_subsampling ==
 469                                    V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
 470                                 f->pixelformat = V4L2_PIX_FMT_YUV422P;
 471                                 return f->index ? -EINVAL : 0;
 472                         }
 473                 }
 474         } else {
 475                 return -EINVAL;
 476         }
 477
 478         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 479                 return -EINVAL;
 480
 481         /* Skip YUYV if the vdoa is not available */
 482         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 483             formats[f->index] == V4L2_PIX_FMT_YUYV)
 484                 return -EINVAL;
 485
 486         f->pixelformat = formats[f->index];
 487
 488         return 0;
 489 }
 490
 491 static int coda_g_fmt(struct file *file, void *priv,
 492                       struct v4l2_format *f)
 493 {
 494         struct coda_q_data *q_data;
 495         struct coda_ctx *ctx = fh_to_ctx(priv);
 496
 497         q_data = get_q_data(ctx, f->type);
 498         if (!q_data)
 499                 return -EINVAL;
 500
 501         f->fmt.pix.field        = V4L2_FIELD_NONE;
 502         f->fmt.pix.pixelformat  = q_data->fourcc;
 503         f->fmt.pix.width        = q_data->width;
 504         f->fmt.pix.height       = q_data->height;
 505         f->fmt.pix.bytesperline = q_data->bytesperline;
 506
 507         f->fmt.pix.sizeimage    = q_data->sizeimage;
 508         f->fmt.pix.colorspace   = ctx->colorspace;
 509         f->fmt.pix.xfer_func    = ctx->xfer_func;
 510         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 511         f->fmt.pix.quantization = ctx->quantization;
 512
 513         return 0;
 514 }
 515
 516 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 517 {
 518         struct coda_q_data *q_data;
 519         const u32 *formats;
 520         int i;
 521
 522         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 523                 formats = ctx->cvd->src_formats;
 524         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 525                 formats = ctx->cvd->dst_formats;
 526         else
 527                 return -EINVAL;
 528
 529         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 530                 /* Skip YUYV if the vdoa is not available */
 531                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 532                     formats[i] == V4L2_PIX_FMT_YUYV)
 533                         continue;
 534
 535                 if (formats[i] == f->fmt.pix.pixelformat) {
 536                         f->fmt.pix.pixelformat = formats[i];
 537                         return 0;
 538                 }
 539         }
 540
 541         /* Fall back to currently set pixelformat */
 542         q_data = get_q_data(ctx, f->type);
 543         f->fmt.pix.pixelformat = q_data->fourcc;
 544
 545         return 0;
 546 }
 547
 548 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 549                              bool *use_vdoa)
 550 {
 551         int err;
 552
 553         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 554                 return -EINVAL;
 555
 556         if (!use_vdoa)
 557                 return -EINVAL;
 558
 559         if (!ctx->vdoa) {
 560                 *use_vdoa = false;
 561                 return 0;
 562         }
 563
 564         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 565                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 566         if (err) {
 567                 *use_vdoa = false;
 568                 return 0;
 569         }
 570
 571         *use_vdoa = true;
 572         return 0;
 573 }
 574
 575 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 576                                             u32 width, u32 height)
 577 {
 578         /*
 579          * This is a rough estimate for sensible compressed buffer
 580          * sizes (between 1 and 16 bits per pixel). This could be
 581          * improved by better format specific worst case estimates.
 582          */
 583         return round_up(clamp(sizeimage, width * height / 8,
 584                                          width * height * 2), PAGE_SIZE);
 585 }
 586
 587 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 588                         struct v4l2_format *f)
 589 {
 590         struct coda_dev *dev = ctx->dev;
 591         unsigned int max_w, max_h;
 592         enum v4l2_field field;
 593
 594         field = f->fmt.pix.field;
 595         if (field == V4L2_FIELD_ANY)
 596                 field = V4L2_FIELD_NONE;
 597         else if (V4L2_FIELD_NONE != field)
 598                 return -EINVAL;
 599
 600         /* V4L2 specification suggests the driver corrects the format struct
 601          * if any of the dimensions is unsupported */
 602         f->fmt.pix.field = field;
 603
 604         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 605         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 606                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 607                               S_ALIGN);
 608
 609         switch (f->fmt.pix.pixelformat) {
 610         case V4L2_PIX_FMT_NV12:
 611         case V4L2_PIX_FMT_YUV420:
 612         case V4L2_PIX_FMT_YVU420:
 613                 /*
 614                  * Frame stride must be at least multiple of 8,
 615                  * but multiple of 16 for h.264 or JPEG 4:2:x
 616                  */
 617                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 618                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 619                                         f->fmt.pix.height * 3 / 2;
 620                 break;
 621         case V4L2_PIX_FMT_YUYV:
 622                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 623                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 624                                         f->fmt.pix.height;
 625                 break;
 626         case V4L2_PIX_FMT_YUV422P:
 627                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 628                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 629                                         f->fmt.pix.height * 2;
 630                 break;
 631         case V4L2_PIX_FMT_GREY:
 632                 /* keep 16 pixel alignment of 8-bit pixel data */
 633                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 634                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
 635                 break;
 636         case V4L2_PIX_FMT_JPEG:
 637         case V4L2_PIX_FMT_H264:
 638         case V4L2_PIX_FMT_MPEG4:
 639         case V4L2_PIX_FMT_MPEG2:
 640                 f->fmt.pix.bytesperline = 0;
 641                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 642                                                         f->fmt.pix.sizeimage,
 643                                                         f->fmt.pix.width,
 644                                                         f->fmt.pix.height);
 645                 break;
 646         default:
 647                 BUG();
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 654                                 struct v4l2_format *f)
 655 {
 656         struct coda_ctx *ctx = fh_to_ctx(priv);
 657         const struct coda_q_data *q_data_src;
 658         const struct coda_codec *codec;
 659         struct vb2_queue *src_vq;
 660         int hscale = 0;
 661         int vscale = 0;
 662         int ret;
 663         bool use_vdoa;
 664
 665         ret = coda_try_pixelformat(ctx, f);
 666         if (ret < 0)
 667                 return ret;
 668
 669         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 670
 671         /*
 672          * If the source format is already fixed, only allow the same output
 673          * resolution. When decoding JPEG images, we also have to make sure to
 674          * use the same chroma subsampling.
 675          */
 676         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 677         if (vb2_is_streaming(src_vq)) {
 678                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 679                     ctx->dev->devtype->product == CODA_960) {
 680                         hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
 681                         vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
 682                 }
 683                 f->fmt.pix.width = q_data_src->width >> hscale;
 684                 f->fmt.pix.height = q_data_src->height >> vscale;
 685
 686                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
 687                         if (ctx->params.jpeg_chroma_subsampling ==
 688                             V4L2_JPEG_CHROMA_SUBSAMPLING_420 &&
 689                             f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P)
 690                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
 691                         else if (ctx->params.jpeg_chroma_subsampling ==
 692                                  V4L2_JPEG_CHROMA_SUBSAMPLING_422)
 693                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 694                 }
 695         }
 696
 697         f->fmt.pix.colorspace = ctx->colorspace;
 698         f->fmt.pix.xfer_func = ctx->xfer_func;
 699         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 700         f->fmt.pix.quantization = ctx->quantization;
 701
 702         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 703         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 704                                 f->fmt.pix.pixelformat);
 705         if (!codec)
 706                 return -EINVAL;
 707
 708         ret = coda_try_fmt(ctx, codec, f);
 709         if (ret < 0)
 710                 return ret;
 711
 712         /* The decoders always write complete macroblocks or MCUs */
 713         if (ctx->inst_type == CODA_INST_DECODER) {
 714                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16 >> hscale);
 715                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16 >> vscale);
 716                 if (codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
 717                     f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
 718                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 719                                                f->fmt.pix.height * 2;
 720                 } else {
 721                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 722                                                f->fmt.pix.height * 3 / 2;
 723                 }
 724
 725                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 726                 if (ret < 0)
 727                         return ret;
 728
 729                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 730                         if (!use_vdoa)
 731                                 return -EINVAL;
 732
 733                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 734                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 735                                 f->fmt.pix.height;
 736                 }
 737         }
 738
 739         return 0;
 740 }
 741
 742 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 743 {
 744         enum v4l2_colorspace colorspace;
 745
 746         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 747                 colorspace = V4L2_COLORSPACE_JPEG;
 748         else if (fmt->width <= 720 && fmt->height <= 576)
 749                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 750         else
 751                 colorspace = V4L2_COLORSPACE_REC709;
 752
 753         fmt->colorspace = colorspace;
 754         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 755         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 756         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 757 }
 758
 759 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 760                                 struct v4l2_format *f)
 761 {
 762         struct coda_ctx *ctx = fh_to_ctx(priv);
 763         struct coda_dev *dev = ctx->dev;
 764         const struct coda_q_data *q_data_dst;
 765         const struct coda_codec *codec;
 766         int ret;
 767
 768         ret = coda_try_pixelformat(ctx, f);
 769         if (ret < 0)
 770                 return ret;
 771
 772         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 773                 coda_set_default_colorspace(&f->fmt.pix);
 774
 775         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 776         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 777
 778         return coda_try_fmt(ctx, codec, f);
 779 }
 780
 781 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 782                       struct v4l2_rect *r)
 783 {
 784         struct coda_q_data *q_data;
 785         struct vb2_queue *vq;
 786
 787         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 788         if (!vq)
 789                 return -EINVAL;
 790
 791         q_data = get_q_data(ctx, f->type);
 792         if (!q_data)
 793                 return -EINVAL;
 794
 795         if (vb2_is_busy(vq)) {
 796                 v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
 797                          __func__, v4l2_type_names[f->type], vq->num_buffers);
 798                 return -EBUSY;
 799         }
 800
 801         q_data->fourcc = f->fmt.pix.pixelformat;
 802         q_data->width = f->fmt.pix.width;
 803         q_data->height = f->fmt.pix.height;
 804         q_data->bytesperline = f->fmt.pix.bytesperline;
 805         q_data->sizeimage = f->fmt.pix.sizeimage;
 806         if (r) {
 807                 q_data->rect = *r;
 808         } else {
 809                 q_data->rect.left = 0;
 810                 q_data->rect.top = 0;
 811                 q_data->rect.width = f->fmt.pix.width;
 812                 q_data->rect.height = f->fmt.pix.height;
 813         }
 814
 815         switch (f->fmt.pix.pixelformat) {
 816         case V4L2_PIX_FMT_YUYV:
 817                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 818                 break;
 819         case V4L2_PIX_FMT_NV12:
 820                 if (!disable_tiling && ctx->use_bit &&
 821                     ctx->dev->devtype->product == CODA_960) {
 822                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 823                         break;
 824                 }
 825                 fallthrough;
 826         case V4L2_PIX_FMT_YUV420:
 827         case V4L2_PIX_FMT_YVU420:
 828         case V4L2_PIX_FMT_YUV422P:
 829                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 830                 break;
 831         default:
 832                 break;
 833         }
 834
 835         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 836             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 837             ctx->use_vdoa)
 838                 vdoa_context_configure(ctx->vdoa,
 839                                        round_up(f->fmt.pix.width, 16),
 840                                        f->fmt.pix.height,
 841                                        f->fmt.pix.pixelformat);
 842         else
 843                 ctx->use_vdoa = false;
 844
 845         coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
 846                  v4l2_type_names[f->type], q_data->width, q_data->height,
 847                  (char *)&q_data->fourcc,
 848                  (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 849
 850         return 0;
 851 }
 852
 853 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 854                               struct v4l2_format *f)
 855 {
 856         struct coda_ctx *ctx = fh_to_ctx(priv);
 857         struct coda_q_data *q_data_src;
 858         const struct coda_codec *codec;
 859         struct v4l2_rect r;
 860         int hscale = 0;
 861         int vscale = 0;
 862         int ret;
 863
 864         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 865
 866         if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 867             ctx->dev->devtype->product == CODA_960) {
 868                 hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
 869                 vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
 870         }
 871
 872         ret = coda_try_fmt_vid_cap(file, priv, f);
 873         if (ret)
 874                 return ret;
 875
 876         r.left = 0;
 877         r.top = 0;
 878         r.width = q_data_src->width >> hscale;
 879         r.height = q_data_src->height >> vscale;
 880
 881         ret = coda_s_fmt(ctx, f, &r);
 882         if (ret)
 883                 return ret;
 884
 885         if (ctx->inst_type != CODA_INST_ENCODER)
 886                 return 0;
 887
 888         /* Setting the coded format determines the selected codec */
 889         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 890                                 f->fmt.pix.pixelformat);
 891         if (!codec) {
 892                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 893                 return -EINVAL;
 894         }
 895         ctx->codec = codec;
 896
 897         ctx->colorspace = f->fmt.pix.colorspace;
 898         ctx->xfer_func = f->fmt.pix.xfer_func;
 899         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 900         ctx->quantization = f->fmt.pix.quantization;
 901
 902         return 0;
 903 }
 904
 905 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 906                               struct v4l2_format *f)
 907 {
 908         struct coda_ctx *ctx = fh_to_ctx(priv);
 909         const struct coda_codec *codec;
 910         struct v4l2_format f_cap;
 911         struct vb2_queue *dst_vq;
 912         int ret;
 913
 914         ret = coda_try_fmt_vid_out(file, priv, f);
 915         if (ret)
 916                 return ret;
 917
 918         ret = coda_s_fmt(ctx, f, NULL);
 919         if (ret)
 920                 return ret;
 921
 922         ctx->colorspace = f->fmt.pix.colorspace;
 923         ctx->xfer_func = f->fmt.pix.xfer_func;
 924         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 925         ctx->quantization = f->fmt.pix.quantization;
 926
 927         if (ctx->inst_type != CODA_INST_DECODER)
 928                 return 0;
 929
 930         /* Setting the coded format determines the selected codec */
 931         codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
 932                                 V4L2_PIX_FMT_YUV420);
 933         if (!codec) {
 934                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 935                 return -EINVAL;
 936         }
 937         ctx->codec = codec;
 938
 939         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 940         if (!dst_vq)
 941                 return -EINVAL;
 942
 943         /*
 944          * Setting the capture queue format is not possible while the capture
 945          * queue is still busy. This is not an error, but the user will have to
 946          * make sure themselves that the capture format is set correctly before
 947          * starting the output queue again.
 948          */
 949         if (vb2_is_busy(dst_vq))
 950                 return 0;
 951
 952         memset(&f_cap, 0, sizeof(f_cap));
 953         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 954         coda_g_fmt(file, priv, &f_cap);
 955         f_cap.fmt.pix.width = f->fmt.pix.width;
 956         f_cap.fmt.pix.height = f->fmt.pix.height;
 957
 958         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 959 }
 960
 961 static int coda_reqbufs(struct file *file, void *priv,
 962                         struct v4l2_requestbuffers *rb)
 963 {
 964         struct coda_ctx *ctx = fh_to_ctx(priv);
 965         int ret;
 966
 967         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 968         if (ret)
 969                 return ret;
 970
 971         /*
 972          * Allow to allocate instance specific per-context buffers, such as
 973          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 974          */
 975         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 976                 return ctx->ops->reqbufs(ctx, rb);
 977
 978         return 0;
 979 }
 980
 981 static int coda_qbuf(struct file *file, void *priv,
 982                      struct v4l2_buffer *buf)
 983 {
 984         struct coda_ctx *ctx = fh_to_ctx(priv);
 985
 986         if (ctx->inst_type == CODA_INST_DECODER &&
 987             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 988                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 989
 990         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 991 }
 992
 993 static int coda_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 994 {
 995         struct coda_ctx *ctx = fh_to_ctx(priv);
 996         int ret;
 997
 998         ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
 999
1000         if (ctx->inst_type == CODA_INST_DECODER &&
1001             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1002                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
1003
1004         return ret;
1005 }
1006
1007 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
1008                        enum vb2_buffer_state state)
1009 {
1010         const struct v4l2_event eos_event = {
1011                 .type = V4L2_EVENT_EOS
1012         };
1013
1014         if (buf->flags & V4L2_BUF_FLAG_LAST)
1015                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
1016
1017         v4l2_m2m_buf_done(buf, state);
1018 }
1019
1020 static int coda_g_selection(struct file *file, void *fh,
1021                             struct v4l2_selection *s)
1022 {
1023         struct coda_ctx *ctx = fh_to_ctx(fh);
1024         struct coda_q_data *q_data;
1025         struct v4l2_rect r, *rsel;
1026
1027         q_data = get_q_data(ctx, s->type);
1028         if (!q_data)
1029                 return -EINVAL;
1030
1031         r.left = 0;
1032         r.top = 0;
1033         r.width = q_data->width;
1034         r.height = q_data->height;
1035         rsel = &q_data->rect;
1036
1037         switch (s->target) {
1038         case V4L2_SEL_TGT_CROP_DEFAULT:
1039         case V4L2_SEL_TGT_CROP_BOUNDS:
1040                 rsel = &r;
1041                 fallthrough;
1042         case V4L2_SEL_TGT_CROP:
1043                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
1044                     ctx->inst_type == CODA_INST_DECODER)
1045                         return -EINVAL;
1046                 break;
1047         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1048         case V4L2_SEL_TGT_COMPOSE_PADDED:
1049                 rsel = &r;
1050                 fallthrough;
1051         case V4L2_SEL_TGT_COMPOSE:
1052         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1053                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1054                     ctx->inst_type == CODA_INST_ENCODER)
1055                         return -EINVAL;
1056                 break;
1057         default:
1058                 return -EINVAL;
1059         }
1060
1061         s->r = *rsel;
1062
1063         return 0;
1064 }
1065
1066 static int coda_s_selection(struct file *file, void *fh,
1067                             struct v4l2_selection *s)
1068 {
1069         struct coda_ctx *ctx = fh_to_ctx(fh);
1070         struct coda_q_data *q_data;
1071
1072         switch (s->target) {
1073         case V4L2_SEL_TGT_CROP:
1074                 if (ctx->inst_type == CODA_INST_ENCODER &&
1075                     s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1076                         q_data = get_q_data(ctx, s->type);
1077                         if (!q_data)
1078                                 return -EINVAL;
1079
1080                         s->r.left = 0;
1081                         s->r.top = 0;
1082                         s->r.width = clamp(s->r.width, 2U, q_data->width);
1083                         s->r.height = clamp(s->r.height, 2U, q_data->height);
1084
1085                         if (s->flags & V4L2_SEL_FLAG_LE) {
1086                                 s->r.width = round_up(s->r.width, 2);
1087                                 s->r.height = round_up(s->r.height, 2);
1088                         } else {
1089                                 s->r.width = round_down(s->r.width, 2);
1090                                 s->r.height = round_down(s->r.height, 2);
1091                         }
1092
1093                         q_data->rect = s->r;
1094
1095                         coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
1096                                  s->r.width, s->r.height);
1097
1098                         return 0;
1099                 }
1100                 fallthrough;
1101         case V4L2_SEL_TGT_NATIVE_SIZE:
1102         case V4L2_SEL_TGT_COMPOSE:
1103                 return coda_g_selection(file, fh, s);
1104         default:
1105                 /* v4l2-compliance expects this to fail for read-only targets */
1106                 return -EINVAL;
1107         }
1108 }
1109
1110 static void coda_wake_up_capture_queue(struct coda_ctx *ctx)
1111 {
1112         struct vb2_queue *dst_vq;
1113
1114         coda_dbg(1, ctx, "waking up capture queue\n");
1115
1116         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1117         dst_vq->last_buffer_dequeued = true;
1118         wake_up(&dst_vq->done_wq);
1119 }
1120
1121 static int coda_encoder_cmd(struct file *file, void *fh,
1122                             struct v4l2_encoder_cmd *ec)
1123 {
1124         struct coda_ctx *ctx = fh_to_ctx(fh);
1125         struct vb2_v4l2_buffer *buf;
1126         int ret;
1127
1128         ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1129         if (ret < 0)
1130                 return ret;
1131
1132         mutex_lock(&ctx->wakeup_mutex);
1133         buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1134         if (buf) {
1135                 /*
1136                  * If the last output buffer is still on the queue, make sure
1137                  * that decoder finish_run will see the last flag and report it
1138                  * to userspace.
1139                  */
1140                 buf->flags |= V4L2_BUF_FLAG_LAST;
1141         } else {
1142                 /* Set the stream-end flag on this context */
1143                 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1144
1145                 /*
1146                  * If the last output buffer has already been taken from the
1147                  * queue, wake up the capture queue and signal end of stream
1148                  * via the -EPIPE mechanism.
1149                  */
1150                 coda_wake_up_capture_queue(ctx);
1151         }
1152         mutex_unlock(&ctx->wakeup_mutex);
1153
1154         return 0;
1155 }
1156
1157 static bool coda_mark_last_meta(struct coda_ctx *ctx)
1158 {
1159         struct coda_buffer_meta *meta;
1160
1161         coda_dbg(1, ctx, "marking last meta\n");
1162
1163         spin_lock(&ctx->buffer_meta_lock);
1164         if (list_empty(&ctx->buffer_meta_list)) {
1165                 spin_unlock(&ctx->buffer_meta_lock);
1166                 return false;
1167         }
1168
1169         meta = list_last_entry(&ctx->buffer_meta_list, struct coda_buffer_meta,
1170                                list);
1171         meta->last = true;
1172
1173         spin_unlock(&ctx->buffer_meta_lock);
1174         return true;
1175 }
1176
1177 static bool coda_mark_last_dst_buf(struct coda_ctx *ctx)
1178 {
1179         struct vb2_v4l2_buffer *buf;
1180         struct vb2_buffer *dst_vb;
1181         struct vb2_queue *dst_vq;
1182         unsigned long flags;
1183
1184         coda_dbg(1, ctx, "marking last capture buffer\n");
1185
1186         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1187         spin_lock_irqsave(&dst_vq->done_lock, flags);
1188         if (list_empty(&dst_vq->done_list)) {
1189                 spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1190                 return false;
1191         }
1192
1193         dst_vb = list_last_entry(&dst_vq->done_list, struct vb2_buffer,
1194                                  done_entry);
1195         buf = to_vb2_v4l2_buffer(dst_vb);
1196         buf->flags |= V4L2_BUF_FLAG_LAST;
1197
1198         spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1199         return true;
1200 }
1201
1202 static int coda_decoder_cmd(struct file *file, void *fh,
1203                             struct v4l2_decoder_cmd *dc)
1204 {
1205         struct coda_ctx *ctx = fh_to_ctx(fh);
1206         struct coda_dev *dev = ctx->dev;
1207         struct vb2_v4l2_buffer *buf;
1208         struct vb2_queue *dst_vq;
1209         bool stream_end;
1210         bool wakeup;
1211         int ret;
1212
1213         ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1214         if (ret < 0)
1215                 return ret;
1216
1217         switch (dc->cmd) {
1218         case V4L2_DEC_CMD_START:
1219                 mutex_lock(&dev->coda_mutex);
1220                 mutex_lock(&ctx->bitstream_mutex);
1221                 coda_bitstream_flush(ctx);
1222                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1223                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
1224                 vb2_clear_last_buffer_dequeued(dst_vq);
1225                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1226                 coda_fill_bitstream(ctx, NULL);
1227                 mutex_unlock(&ctx->bitstream_mutex);
1228                 mutex_unlock(&dev->coda_mutex);
1229                 break;
1230         case V4L2_DEC_CMD_STOP:
1231                 stream_end = false;
1232                 wakeup = false;
1233
1234                 mutex_lock(&ctx->wakeup_mutex);
1235
1236                 buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1237                 if (buf) {
1238                         coda_dbg(1, ctx, "marking last pending buffer\n");
1239
1240                         /* Mark last buffer */
1241                         buf->flags |= V4L2_BUF_FLAG_LAST;
1242
1243                         if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) == 0) {
1244                                 coda_dbg(1, ctx, "all remaining buffers queued\n");
1245                                 stream_end = true;
1246                         }
1247                 } else {
1248                         if (ctx->use_bit)
1249                                 if (coda_mark_last_meta(ctx))
1250                                         stream_end = true;
1251                                 else
1252                                         wakeup = true;
1253                         else
1254                                 if (!coda_mark_last_dst_buf(ctx))
1255                                         wakeup = true;
1256                 }
1257
1258                 if (stream_end) {
1259                         coda_dbg(1, ctx, "all remaining buffers queued\n");
1260
1261                         /* Set the stream-end flag on this context */
1262                         coda_bit_stream_end_flag(ctx);
1263                         ctx->hold = false;
1264                         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1265                 }
1266
1267                 if (wakeup) {
1268                         /* If there is no buffer in flight, wake up */
1269                         coda_wake_up_capture_queue(ctx);
1270                 }
1271
1272                 mutex_unlock(&ctx->wakeup_mutex);
1273                 break;
1274         default:
1275                 return -EINVAL;
1276         }
1277
1278         return 0;
1279 }
1280
1281 static int coda_enum_framesizes(struct file *file, void *fh,
1282                                 struct v4l2_frmsizeenum *fsize)
1283 {
1284         struct coda_ctx *ctx = fh_to_ctx(fh);
1285         struct coda_q_data *q_data_dst;
1286         const struct coda_codec *codec;
1287
1288         if (fsize->index)
1289                 return -EINVAL;
1290
1291         if (coda_format_normalize_yuv(fsize->pixel_format) ==
1292             V4L2_PIX_FMT_YUV420) {
1293                 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1294                 codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1295                                         q_data_dst->fourcc);
1296         } else {
1297                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1298                                         fsize->pixel_format);
1299         }
1300         if (!codec)
1301                 return -EINVAL;
1302
1303         fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1304         fsize->stepwise.min_width = MIN_W;
1305         fsize->stepwise.max_width = codec->max_w;
1306         fsize->stepwise.step_width = 1;
1307         fsize->stepwise.min_height = MIN_H;
1308         fsize->stepwise.max_height = codec->max_h;
1309         fsize->stepwise.step_height = 1;
1310
1311         return 0;
1312 }
1313
1314 static int coda_enum_frameintervals(struct file *file, void *fh,
1315                                     struct v4l2_frmivalenum *f)
1316 {
1317         struct coda_ctx *ctx = fh_to_ctx(fh);
1318         int i;
1319
1320         if (f->index)
1321                 return -EINVAL;
1322
1323         /* Disallow YUYV if the vdoa is not available */
1324         if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1325                 return -EINVAL;
1326
1327         for (i = 0; i < CODA_MAX_FORMATS; i++) {
1328                 if (f->pixel_format == ctx->cvd->src_formats[i] ||
1329                     f->pixel_format == ctx->cvd->dst_formats[i])
1330                         break;
1331         }
1332         if (i == CODA_MAX_FORMATS)
1333                 return -EINVAL;
1334
1335         f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1336         f->stepwise.min.numerator = 1;
1337         f->stepwise.min.denominator = 65535;
1338         f->stepwise.max.numerator = 65536;
1339         f->stepwise.max.denominator = 1;
1340         f->stepwise.step.numerator = 1;
1341         f->stepwise.step.denominator = 1;
1342
1343         return 0;
1344 }
1345
1346 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1347 {
1348         struct coda_ctx *ctx = fh_to_ctx(fh);
1349         struct v4l2_fract *tpf;
1350
1351         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1352                 return -EINVAL;
1353
1354         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1355         tpf = &a->parm.output.timeperframe;
1356         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1357         tpf->numerator = 1 + (ctx->params.framerate >>
1358                               CODA_FRATE_DIV_OFFSET);
1359
1360         return 0;
1361 }
1362
1363 /*
1364  * Approximate timeperframe v4l2_fract with values that can be written
1365  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1366  */
1367 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1368 {
1369         struct v4l2_fract s = *timeperframe;
1370         struct v4l2_fract f0;
1371         struct v4l2_fract f1 = { 1, 0 };
1372         struct v4l2_fract f2 = { 0, 1 };
1373         unsigned int i, div, s_denominator;
1374
1375         /* Lower bound is 1/65535 */
1376         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1377                 timeperframe->numerator = 1;
1378                 timeperframe->denominator = 65535;
1379                 return;
1380         }
1381
1382         /* Upper bound is 65536/1 */
1383         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1384                 timeperframe->numerator = 65536;
1385                 timeperframe->denominator = 1;
1386                 return;
1387         }
1388
1389         /* Reduce fraction to lowest terms */
1390         div = gcd(s.numerator, s.denominator);
1391         if (div > 1) {
1392                 s.numerator /= div;
1393                 s.denominator /= div;
1394         }
1395
1396         if (s.numerator <= 65536 && s.denominator < 65536) {
1397                 *timeperframe = s;
1398                 return;
1399         }
1400
1401         /* Find successive convergents from continued fraction expansion */
1402         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1403                 f0 = f1;
1404                 f1 = f2;
1405
1406                 /* Stop when f2 exactly equals timeperframe */
1407                 if (s.numerator == 0)
1408                         break;
1409
1410                 i = s.denominator / s.numerator;
1411
1412                 f2.numerator = f0.numerator + i * f1.numerator;
1413                 f2.denominator = f0.denominator + i * f2.denominator;
1414
1415                 s_denominator = s.numerator;
1416                 s.numerator = s.denominator % s.numerator;
1417                 s.denominator = s_denominator;
1418         }
1419
1420         *timeperframe = f1;
1421 }
1422
1423 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1424 {
1425         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1426                 timeperframe->denominator;
1427 }
1428
1429 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1430 {
1431         struct coda_ctx *ctx = fh_to_ctx(fh);
1432         struct v4l2_fract *tpf;
1433
1434         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1435                 return -EINVAL;
1436
1437         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1438         tpf = &a->parm.output.timeperframe;
1439         coda_approximate_timeperframe(tpf);
1440         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1441         ctx->params.framerate_changed = true;
1442
1443         return 0;
1444 }
1445
1446 static int coda_subscribe_event(struct v4l2_fh *fh,
1447                                 const struct v4l2_event_subscription *sub)
1448 {
1449         struct coda_ctx *ctx = fh_to_ctx(fh);
1450
1451         switch (sub->type) {
1452         case V4L2_EVENT_EOS:
1453                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1454         case V4L2_EVENT_SOURCE_CHANGE:
1455                 if (ctx->inst_type == CODA_INST_DECODER)
1456                         return v4l2_event_subscribe(fh, sub, 0, NULL);
1457                 else
1458                         return -EINVAL;
1459         default:
1460                 return v4l2_ctrl_subscribe_event(fh, sub);
1461         }
1462 }
1463
1464 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1465         .vidioc_querycap        = coda_querycap,
1466
1467         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1468         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1469         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1470         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1471
1472         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1473         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1474         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1475         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1476
1477         .vidioc_reqbufs         = coda_reqbufs,
1478         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1479
1480         .vidioc_qbuf            = coda_qbuf,
1481         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1482         .vidioc_dqbuf           = coda_dqbuf,
1483         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1484         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1485
1486         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1487         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1488
1489         .vidioc_g_selection     = coda_g_selection,
1490         .vidioc_s_selection     = coda_s_selection,
1491
1492         .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
1493         .vidioc_encoder_cmd     = coda_encoder_cmd,
1494         .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
1495         .vidioc_decoder_cmd     = coda_decoder_cmd,
1496
1497         .vidioc_g_parm          = coda_g_parm,
1498         .vidioc_s_parm          = coda_s_parm,
1499
1500         .vidioc_enum_framesizes = coda_enum_framesizes,
1501         .vidioc_enum_frameintervals = coda_enum_frameintervals,
1502
1503         .vidioc_subscribe_event = coda_subscribe_event,
1504         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1505 };
1506
1507 /*
1508  * Mem-to-mem operations.
1509  */
1510
1511 static void coda_device_run(void *m2m_priv)
1512 {
1513         struct coda_ctx *ctx = m2m_priv;
1514         struct coda_dev *dev = ctx->dev;
1515
1516         queue_work(dev->workqueue, &ctx->pic_run_work);
1517 }
1518
1519 static void coda_pic_run_work(struct work_struct *work)
1520 {
1521         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1522         struct coda_dev *dev = ctx->dev;
1523         int ret;
1524
1525         mutex_lock(&ctx->buffer_mutex);
1526         mutex_lock(&dev->coda_mutex);
1527
1528         ret = ctx->ops->prepare_run(ctx);
1529         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER)
1530                 goto out;
1531
1532         if (!wait_for_completion_timeout(&ctx->completion,
1533                                          msecs_to_jiffies(1000))) {
1534                 if (ctx->use_bit) {
1535                         dev_err(dev->dev, "CODA PIC_RUN timeout\n");
1536
1537                         ctx->hold = true;
1538
1539                         coda_hw_reset(ctx);
1540                 }
1541
1542                 if (ctx->ops->run_timeout)
1543                         ctx->ops->run_timeout(ctx);
1544         } else {
1545                 ctx->ops->finish_run(ctx);
1546         }
1547
1548         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1549             ctx->ops->seq_end_work)
1550                 queue_work(dev->workqueue, &ctx->seq_end_work);
1551
1552 out:
1553         mutex_unlock(&dev->coda_mutex);
1554         mutex_unlock(&ctx->buffer_mutex);
1555
1556         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1557 }
1558
1559 static int coda_job_ready(void *m2m_priv)
1560 {
1561         struct coda_ctx *ctx = m2m_priv;
1562         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1563
1564         /*
1565          * For both 'P' and 'key' frame cases 1 picture
1566          * and 1 frame are needed. In the decoder case,
1567          * the compressed frame can be in the bitstream.
1568          */
1569         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1570                 coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1571                 return 0;
1572         }
1573
1574         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1575                 coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1576                 return 0;
1577         }
1578
1579         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1580                 bool stream_end = ctx->bit_stream_param &
1581                                   CODA_BIT_STREAM_END_FLAG;
1582                 int num_metas = ctx->num_metas;
1583                 struct coda_buffer_meta *meta;
1584                 unsigned int count;
1585
1586                 count = hweight32(ctx->frm_dis_flg);
1587                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1588                         coda_dbg(1, ctx,
1589                                  "not ready: all internal buffers in use: %d/%d (0x%x)",
1590                                  count, ctx->num_internal_frames,
1591                                  ctx->frm_dis_flg);
1592                         return 0;
1593                 }
1594
1595                 if (ctx->hold && !src_bufs) {
1596                         coda_dbg(1, ctx,
1597                                  "not ready: on hold for more buffers.\n");
1598                         return 0;
1599                 }
1600
1601                 if (!stream_end && (num_metas + src_bufs) < 2) {
1602                         coda_dbg(1, ctx,
1603                                  "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1604                                  num_metas, src_bufs);
1605                         return 0;
1606                 }
1607
1608                 meta = list_first_entry(&ctx->buffer_meta_list,
1609                                         struct coda_buffer_meta, list);
1610                 if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1611                     !stream_end) {
1612                         coda_dbg(1, ctx,
1613                                  "not ready: not enough bitstream data to read past %u (%u)\n",
1614                                  meta->end, ctx->bitstream_fifo.kfifo.in);
1615                         return 0;
1616                 }
1617         }
1618
1619         if (ctx->aborting) {
1620                 coda_dbg(1, ctx, "not ready: aborting\n");
1621                 return 0;
1622         }
1623
1624         coda_dbg(2, ctx, "job ready\n");
1625
1626         return 1;
1627 }
1628
1629 static void coda_job_abort(void *priv)
1630 {
1631         struct coda_ctx *ctx = priv;
1632
1633         ctx->aborting = 1;
1634
1635         coda_dbg(1, ctx, "job abort\n");
1636 }
1637
1638 static const struct v4l2_m2m_ops coda_m2m_ops = {
1639         .device_run     = coda_device_run,
1640         .job_ready      = coda_job_ready,
1641         .job_abort      = coda_job_abort,
1642 };
1643
1644 static void set_default_params(struct coda_ctx *ctx)
1645 {
1646         unsigned int max_w, max_h, usize, csize;
1647
1648         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1649                                      ctx->cvd->dst_formats[0]);
1650         max_w = min(ctx->codec->max_w, 1920U);
1651         max_h = min(ctx->codec->max_h, 1088U);
1652         usize = max_w * max_h * 3 / 2;
1653         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1654
1655         ctx->params.codec_mode = ctx->codec->mode;
1656         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1657                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1658         else
1659                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1660         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1661         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1662         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1663         ctx->params.framerate = 30;
1664
1665         /* Default formats for output and input queues */
1666         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1667         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1668         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1669         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1670         ctx->q_data[V4L2_M2M_DST].width = max_w;
1671         ctx->q_data[V4L2_M2M_DST].height = max_h;
1672         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1673                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1674                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1675                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1676                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1677         } else {
1678                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1679                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1680                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1681                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1682         }
1683         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1684         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1685         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1686         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1687
1688         /*
1689          * Since the RBC2AXI logic only supports a single chroma plane,
1690          * macroblock tiling only works for to NV12 pixel format.
1691          */
1692         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1693 }
1694
1695 /*
1696  * Queue operations
1697  */
1698 static int coda_queue_setup(struct vb2_queue *vq,
1699                                 unsigned int *nbuffers, unsigned int *nplanes,
1700                                 unsigned int sizes[], struct device *alloc_devs[])
1701 {
1702         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1703         struct coda_q_data *q_data;
1704         unsigned int size;
1705
1706         q_data = get_q_data(ctx, vq->type);
1707         size = q_data->sizeimage;
1708
1709         if (*nplanes)
1710                 return sizes[0] < size ? -EINVAL : 0;
1711
1712         *nplanes = 1;
1713         sizes[0] = size;
1714
1715         coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1716                  size);
1717
1718         return 0;
1719 }
1720
1721 static int coda_buf_prepare(struct vb2_buffer *vb)
1722 {
1723         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1724         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1725         struct coda_q_data *q_data;
1726
1727         q_data = get_q_data(ctx, vb->vb2_queue->type);
1728         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1729                 if (vbuf->field == V4L2_FIELD_ANY)
1730                         vbuf->field = V4L2_FIELD_NONE;
1731                 if (vbuf->field != V4L2_FIELD_NONE) {
1732                         v4l2_warn(&ctx->dev->v4l2_dev,
1733                                   "%s field isn't supported\n", __func__);
1734                         return -EINVAL;
1735                 }
1736         }
1737
1738         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1739                 v4l2_warn(&ctx->dev->v4l2_dev,
1740                           "%s data will not fit into plane (%lu < %lu)\n",
1741                           __func__, vb2_plane_size(vb, 0),
1742                           (long)q_data->sizeimage);
1743                 return -EINVAL;
1744         }
1745
1746         return 0;
1747 }
1748
1749 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1750 {
1751         if (!ctrl)
1752                 return;
1753
1754         v4l2_ctrl_lock(ctrl);
1755
1756         /*
1757          * Extend the control range if the parsed stream contains a known but
1758          * unsupported value or level.
1759          */
1760         if (value > ctrl->maximum) {
1761                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1762                         ctrl->menu_skip_mask & ~(1 << value),
1763                         ctrl->default_value);
1764         } else if (value < ctrl->minimum) {
1765                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1766                         ctrl->menu_skip_mask & ~(1 << value),
1767                         ctrl->default_value);
1768         }
1769
1770         __v4l2_ctrl_s_ctrl(ctrl, value);
1771
1772         v4l2_ctrl_unlock(ctrl);
1773 }
1774
1775 void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
1776                                      u8 level_idc)
1777 {
1778         const char * const *profile_names;
1779         const char * const *level_names;
1780         struct v4l2_ctrl *profile_ctrl;
1781         struct v4l2_ctrl *level_ctrl;
1782         const char *codec_name;
1783         u32 profile_cid;
1784         u32 level_cid;
1785         int profile;
1786         int level;
1787
1788         switch (ctx->codec->src_fourcc) {
1789         case V4L2_PIX_FMT_H264:
1790                 codec_name = "H264";
1791                 profile_cid = V4L2_CID_MPEG_VIDEO_H264_PROFILE;
1792                 level_cid = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1793                 profile_ctrl = ctx->h264_profile_ctrl;
1794                 level_ctrl = ctx->h264_level_ctrl;
1795                 profile = coda_h264_profile(profile_idc);
1796                 level = coda_h264_level(level_idc);
1797                 break;
1798         case V4L2_PIX_FMT_MPEG2:
1799                 codec_name = "MPEG-2";
1800                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
1801                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
1802                 profile_ctrl = ctx->mpeg2_profile_ctrl;
1803                 level_ctrl = ctx->mpeg2_level_ctrl;
1804                 profile = coda_mpeg2_profile(profile_idc);
1805                 level = coda_mpeg2_level(level_idc);
1806                 break;
1807         case V4L2_PIX_FMT_MPEG4:
1808                 codec_name = "MPEG-4";
1809                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
1810                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
1811                 profile_ctrl = ctx->mpeg4_profile_ctrl;
1812                 level_ctrl = ctx->mpeg4_level_ctrl;
1813                 profile = coda_mpeg4_profile(profile_idc);
1814                 level = coda_mpeg4_level(level_idc);
1815                 break;
1816         default:
1817                 return;
1818         }
1819
1820         profile_names = v4l2_ctrl_get_menu(profile_cid);
1821         level_names = v4l2_ctrl_get_menu(level_cid);
1822
1823         if (profile < 0) {
1824                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s profile: %u\n",
1825                           codec_name, profile_idc);
1826         } else {
1827                 coda_dbg(1, ctx, "Parsed %s profile: %s\n", codec_name,
1828                          profile_names[profile]);
1829                 coda_update_menu_ctrl(profile_ctrl, profile);
1830         }
1831
1832         if (level < 0) {
1833                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s level: %u\n",
1834                           codec_name, level_idc);
1835         } else {
1836                 coda_dbg(1, ctx, "Parsed %s level: %s\n", codec_name,
1837                          level_names[level]);
1838                 coda_update_menu_ctrl(level_ctrl, level);
1839         }
1840 }
1841
1842 static void coda_queue_source_change_event(struct coda_ctx *ctx)
1843 {
1844         static const struct v4l2_event source_change_event = {
1845                 .type = V4L2_EVENT_SOURCE_CHANGE,
1846                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1847         };
1848
1849         v4l2_event_queue_fh(&ctx->fh, &source_change_event);
1850 }
1851
1852 static void coda_buf_queue(struct vb2_buffer *vb)
1853 {
1854         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1855         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1856         struct vb2_queue *vq = vb->vb2_queue;
1857         struct coda_q_data *q_data;
1858
1859         q_data = get_q_data(ctx, vb->vb2_queue->type);
1860
1861         /*
1862          * In the decoder case, immediately try to copy the buffer into the
1863          * bitstream ringbuffer and mark it as ready to be dequeued.
1864          */
1865         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1866                 /*
1867                  * For backwards compatibility, queuing an empty buffer marks
1868                  * the stream end
1869                  */
1870                 if (vb2_get_plane_payload(vb, 0) == 0)
1871                         coda_bit_stream_end_flag(ctx);
1872
1873                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1874                         /*
1875                          * Unless already done, try to obtain profile_idc and
1876                          * level_idc from the SPS header. This allows to decide
1877                          * whether to enable reordering during sequence
1878                          * initialization.
1879                          */
1880                         if (!ctx->params.h264_profile_idc) {
1881                                 coda_sps_parse_profile(ctx, vb);
1882                                 coda_update_profile_level_ctrls(ctx,
1883                                                 ctx->params.h264_profile_idc,
1884                                                 ctx->params.h264_level_idc);
1885                         }
1886                 }
1887
1888                 mutex_lock(&ctx->bitstream_mutex);
1889                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1890                 if (vb2_is_streaming(vb->vb2_queue))
1891                         /* This set buf->sequence = ctx->qsequence++ */
1892                         coda_fill_bitstream(ctx, NULL);
1893                 mutex_unlock(&ctx->bitstream_mutex);
1894
1895                 if (!ctx->initialized) {
1896                         /*
1897                          * Run sequence initialization in case the queued
1898                          * buffer contained headers.
1899                          */
1900                         if (vb2_is_streaming(vb->vb2_queue) &&
1901                             ctx->ops->seq_init_work) {
1902                                 queue_work(ctx->dev->workqueue,
1903                                            &ctx->seq_init_work);
1904                                 flush_work(&ctx->seq_init_work);
1905                         }
1906
1907                         if (ctx->initialized)
1908                                 coda_queue_source_change_event(ctx);
1909                 }
1910         } else {
1911                 if ((ctx->inst_type == CODA_INST_ENCODER || !ctx->use_bit) &&
1912                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1913                         vbuf->sequence = ctx->qsequence++;
1914                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1915         }
1916 }
1917
1918 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1919                        size_t size, const char *name, struct dentry *parent)
1920 {
1921         buf->vaddr = dma_alloc_coherent(dev->dev, size, &buf->paddr,
1922                                         GFP_KERNEL);
1923         if (!buf->vaddr) {
1924                 v4l2_err(&dev->v4l2_dev,
1925                          "Failed to allocate %s buffer of size %zu\n",
1926                          name, size);
1927                 return -ENOMEM;
1928         }
1929
1930         buf->size = size;
1931
1932         if (name && parent) {
1933                 buf->blob.data = buf->vaddr;
1934                 buf->blob.size = size;
1935                 buf->dentry = debugfs_create_blob(name, 0444, parent,
1936                                                   &buf->blob);
1937         }
1938
1939         return 0;
1940 }
1941
1942 void coda_free_aux_buf(struct coda_dev *dev,
1943                        struct coda_aux_buf *buf)
1944 {
1945         if (buf->vaddr) {
1946                 dma_free_coherent(dev->dev, buf->size, buf->vaddr, buf->paddr);
1947                 buf->vaddr = NULL;
1948                 buf->size = 0;
1949                 debugfs_remove(buf->dentry);
1950                 buf->dentry = NULL;
1951         }
1952 }
1953
1954 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1955 {
1956         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1957         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1958         struct coda_q_data *q_data_src, *q_data_dst;
1959         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1960         struct vb2_v4l2_buffer *buf;
1961         struct list_head list;
1962         int ret = 0;
1963
1964         if (count < 1)
1965                 return -EINVAL;
1966
1967         coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1968
1969         INIT_LIST_HEAD(&list);
1970
1971         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1972         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1973                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1974                         /* copy the buffers that were queued before streamon */
1975                         mutex_lock(&ctx->bitstream_mutex);
1976                         coda_fill_bitstream(ctx, &list);
1977                         mutex_unlock(&ctx->bitstream_mutex);
1978
1979                         if (ctx->dev->devtype->product != CODA_960 &&
1980                             coda_get_bitstream_payload(ctx) < 512) {
1981                                 v4l2_err(v4l2_dev, "start payload < 512\n");
1982                                 ret = -EINVAL;
1983                                 goto err;
1984                         }
1985
1986                         if (!ctx->initialized) {
1987                                 /* Run sequence initialization */
1988                                 if (ctx->ops->seq_init_work) {
1989                                         queue_work(ctx->dev->workqueue,
1990                                                    &ctx->seq_init_work);
1991                                         flush_work(&ctx->seq_init_work);
1992                                 }
1993                         }
1994                 }
1995
1996                 /*
1997                  * Check the first input JPEG buffer to determine chroma
1998                  * subsampling.
1999                  */
2000                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
2001                         buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2002                         coda_jpeg_decode_header(ctx, &buf->vb2_buf);
2003                         /*
2004                          * We have to start streaming even if the first buffer
2005                          * does not contain a valid JPEG image. The error will
2006                          * be caught during device run and will be signalled
2007                          * via the capture buffer error flag.
2008                          */
2009
2010                         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2011                         q_data_dst->width = round_up(q_data_src->width, 16);
2012                         q_data_dst->height = round_up(q_data_src->height, 16);
2013                         q_data_dst->bytesperline = q_data_dst->width;
2014                         if (ctx->params.jpeg_chroma_subsampling ==
2015                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
2016                                 q_data_dst->sizeimage =
2017                                                 q_data_dst->bytesperline *
2018                                                 q_data_dst->height * 3 / 2;
2019                                 if (q_data_dst->fourcc != V4L2_PIX_FMT_YUV420)
2020                                         q_data_dst->fourcc = V4L2_PIX_FMT_NV12;
2021                         } else {
2022                                 q_data_dst->sizeimage =
2023                                                 q_data_dst->bytesperline *
2024                                                 q_data_dst->height * 2;
2025                                 q_data_dst->fourcc = V4L2_PIX_FMT_YUV422P;
2026                         }
2027                         q_data_dst->rect.left = 0;
2028                         q_data_dst->rect.top = 0;
2029                         q_data_dst->rect.width = q_data_src->width;
2030                         q_data_dst->rect.height = q_data_src->height;
2031                 }
2032                 ctx->streamon_out = 1;
2033         } else {
2034                 ctx->streamon_cap = 1;
2035         }
2036
2037         /* Don't start the coda unless both queues are on */
2038         if (!(ctx->streamon_out && ctx->streamon_cap))
2039                 goto out;
2040
2041         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2042         if ((q_data_src->rect.width != q_data_dst->width &&
2043              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
2044             (q_data_src->rect.height != q_data_dst->height &&
2045              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
2046                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
2047                          q_data_src->rect.width, q_data_src->rect.height,
2048                          q_data_dst->width, q_data_dst->height);
2049                 ret = -EINVAL;
2050                 goto err;
2051         }
2052
2053         /* Allow BIT decoder device_run with no new buffers queued */
2054         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2055                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
2056
2057         ctx->gopcounter = ctx->params.gop_size - 1;
2058
2059         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
2060                 ctx->params.gop_size = 1;
2061         ctx->gopcounter = ctx->params.gop_size - 1;
2062         /* Only decoders have this control */
2063         if (ctx->mb_err_cnt_ctrl)
2064                 v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl, 0);
2065
2066         ret = ctx->ops->start_streaming(ctx);
2067         if (ctx->inst_type == CODA_INST_DECODER) {
2068                 if (ret == -EAGAIN)
2069                         goto out;
2070         }
2071         if (ret < 0)
2072                 goto err;
2073
2074 out:
2075         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2076                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2077                         list_del(&m2m_buf->list);
2078                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
2079                 }
2080         }
2081         return 0;
2082
2083 err:
2084         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2085                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2086                         list_del(&m2m_buf->list);
2087                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
2088                 }
2089                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2090                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2091         } else {
2092                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2093                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2094         }
2095         return ret;
2096 }
2097
2098 static void coda_stop_streaming(struct vb2_queue *q)
2099 {
2100         struct coda_ctx *ctx = vb2_get_drv_priv(q);
2101         struct coda_dev *dev = ctx->dev;
2102         struct vb2_v4l2_buffer *buf;
2103         bool stop;
2104
2105         stop = ctx->streamon_out && ctx->streamon_cap;
2106
2107         coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
2108
2109         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2110                 ctx->streamon_out = 0;
2111
2112                 coda_bit_stream_end_flag(ctx);
2113
2114                 ctx->qsequence = 0;
2115
2116                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2117                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2118         } else {
2119                 ctx->streamon_cap = 0;
2120
2121                 ctx->osequence = 0;
2122                 ctx->sequence_offset = 0;
2123
2124                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2125                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2126         }
2127
2128         if (stop) {
2129                 struct coda_buffer_meta *meta;
2130
2131                 if (ctx->ops->seq_end_work) {
2132                         queue_work(dev->workqueue, &ctx->seq_end_work);
2133                         flush_work(&ctx->seq_end_work);
2134                 }
2135                 spin_lock(&ctx->buffer_meta_lock);
2136                 while (!list_empty(&ctx->buffer_meta_list)) {
2137                         meta = list_first_entry(&ctx->buffer_meta_list,
2138                                                 struct coda_buffer_meta, list);
2139                         list_del(&meta->list);
2140                         kfree(meta);
2141                 }
2142                 ctx->num_metas = 0;
2143                 spin_unlock(&ctx->buffer_meta_lock);
2144                 kfifo_init(&ctx->bitstream_fifo,
2145                         ctx->bitstream.vaddr, ctx->bitstream.size);
2146                 ctx->runcounter = 0;
2147                 ctx->aborting = 0;
2148                 ctx->hold = false;
2149         }
2150
2151         if (!ctx->streamon_out && !ctx->streamon_cap)
2152                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
2153 }
2154
2155 static const struct vb2_ops coda_qops = {
2156         .queue_setup            = coda_queue_setup,
2157         .buf_prepare            = coda_buf_prepare,
2158         .buf_queue              = coda_buf_queue,
2159         .start_streaming        = coda_start_streaming,
2160         .stop_streaming         = coda_stop_streaming,
2161         .wait_prepare           = vb2_ops_wait_prepare,
2162         .wait_finish            = vb2_ops_wait_finish,
2163 };
2164
2165 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2166 {
2167         const char * const *val_names = v4l2_ctrl_get_menu(ctrl->id);
2168         struct coda_ctx *ctx =
2169                         container_of(ctrl->handler, struct coda_ctx, ctrls);
2170
2171         if (val_names)
2172                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d (\"%s\")\n",
2173                          ctrl->id, ctrl->name, ctrl->val, val_names[ctrl->val]);
2174         else
2175                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
2176                          ctrl->id, ctrl->name, ctrl->val);
2177
2178         switch (ctrl->id) {
2179         case V4L2_CID_HFLIP:
2180                 if (ctrl->val)
2181                         ctx->params.rot_mode |= CODA_MIR_HOR;
2182                 else
2183                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
2184                 break;
2185         case V4L2_CID_VFLIP:
2186                 if (ctrl->val)
2187                         ctx->params.rot_mode |= CODA_MIR_VER;
2188                 else
2189                         ctx->params.rot_mode &= ~CODA_MIR_VER;
2190                 break;
2191         case V4L2_CID_MPEG_VIDEO_BITRATE:
2192                 ctx->params.bitrate = ctrl->val / 1000;
2193                 ctx->params.bitrate_changed = true;
2194                 break;
2195         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2196                 ctx->params.gop_size = ctrl->val;
2197                 break;
2198         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2199                 ctx->params.h264_intra_qp = ctrl->val;
2200                 ctx->params.h264_intra_qp_changed = true;
2201                 break;
2202         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2203                 ctx->params.h264_inter_qp = ctrl->val;
2204                 break;
2205         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
2206                 ctx->params.h264_min_qp = ctrl->val;
2207                 break;
2208         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
2209                 ctx->params.h264_max_qp = ctrl->val;
2210                 break;
2211         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
2212                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
2213                 break;
2214         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
2215                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
2216                 break;
2217         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
2218                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
2219                 break;
2220         case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
2221                 ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
2222                 break;
2223         case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
2224                 ctx->params.frame_rc_enable = ctrl->val;
2225                 break;
2226         case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
2227                 ctx->params.mb_rc_enable = ctrl->val;
2228                 break;
2229         case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
2230                 ctx->params.h264_chroma_qp_index_offset = ctrl->val;
2231                 break;
2232         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
2233                 /* TODO: switch between baseline and constrained baseline */
2234                 if (ctx->inst_type == CODA_INST_ENCODER)
2235                         ctx->params.h264_profile_idc = 66;
2236                 break;
2237         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
2238                 /* nothing to do, this is set by the encoder */
2239                 break;
2240         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2241                 ctx->params.mpeg4_intra_qp = ctrl->val;
2242                 break;
2243         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2244                 ctx->params.mpeg4_inter_qp = ctrl->val;
2245                 break;
2246         case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
2247         case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
2248         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
2249         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
2250                 /* nothing to do, these are fixed */
2251                 break;
2252         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2253                 ctx->params.slice_mode = ctrl->val;
2254                 ctx->params.slice_mode_changed = true;
2255                 break;
2256         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2257                 ctx->params.slice_max_mb = ctrl->val;
2258                 ctx->params.slice_mode_changed = true;
2259                 break;
2260         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2261                 ctx->params.slice_max_bits = ctrl->val * 8;
2262                 ctx->params.slice_mode_changed = true;
2263                 break;
2264         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2265                 break;
2266         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
2267                 ctx->params.intra_refresh = ctrl->val;
2268                 ctx->params.intra_refresh_changed = true;
2269                 break;
2270         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
2271                 ctx->params.force_ipicture = true;
2272                 break;
2273         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
2274                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
2275                 break;
2276         case V4L2_CID_JPEG_RESTART_INTERVAL:
2277                 ctx->params.jpeg_restart_interval = ctrl->val;
2278                 break;
2279         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
2280                 ctx->params.vbv_delay = ctrl->val;
2281                 break;
2282         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
2283                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
2284                 break;
2285         default:
2286                 coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
2287                          ctrl->id, ctrl->val);
2288                 return -EINVAL;
2289         }
2290
2291         return 0;
2292 }
2293
2294 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
2295         .s_ctrl = coda_s_ctrl,
2296 };
2297
2298 static void coda_encode_ctrls(struct coda_ctx *ctx)
2299 {
2300         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
2301
2302         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2303                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
2304         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2305                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
2306         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2307                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
2308         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2309                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
2310         if (ctx->dev->devtype->product != CODA_960) {
2311                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2312                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
2313         }
2314         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2315                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
2316         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2317                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
2318         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2319                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
2320         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2321                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
2322                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
2323                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
2324         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2325                 V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
2326                 0);
2327         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2328                 V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);
2329         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2330                 V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE, 0, 1, 1, 1);
2331         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2332                 V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
2333         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2334                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2335                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE, 0x0,
2336                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
2337         if (ctx->dev->devtype->product == CODA_HX4 ||
2338             ctx->dev->devtype->product == CODA_7541) {
2339                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2340                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2341                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2342                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2343                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2344                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2345                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2346         }
2347         if (ctx->dev->devtype->product == CODA_960) {
2348                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2349                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2350                         V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
2351                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_1_0) |
2352                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2353                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2354                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2355                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2356                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
2357                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_1) |
2358                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_2)),
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_CONSTRAINED_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_resume_and_get(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_clk_enable;
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_clk_enable:
2711         pm_runtime_put_sync(dev->dev);
2712 err_pm_get:
2713         v4l2_fh_del(&ctx->fh);
2714         v4l2_fh_exit(&ctx->fh);
2715 err_coda_name_init:
2716         ida_free(&dev->ida, ctx->idx);
2717 err_coda_max:
2718         kfree(ctx);
2719         return ret;
2720 }
2721
2722 static int coda_release(struct file *file)
2723 {
2724         struct coda_dev *dev = video_drvdata(file);
2725         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2726
2727         coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2728
2729         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2730                 coda_bit_stream_end_flag(ctx);
2731
2732         /* If this instance is running, call .job_abort and wait for it to end */
2733         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2734
2735         if (ctx->vdoa)
2736                 vdoa_context_destroy(ctx->vdoa);
2737
2738         /* In case the instance was not running, we still need to call SEQ_END */
2739         if (ctx->ops->seq_end_work) {
2740                 queue_work(dev->workqueue, &ctx->seq_end_work);
2741                 flush_work(&ctx->seq_end_work);
2742         }
2743
2744         if (ctx->dev->devtype->product == CODA_DX6)
2745                 coda_free_aux_buf(dev, &ctx->workbuf);
2746
2747         v4l2_ctrl_handler_free(&ctx->ctrls);
2748         clk_disable_unprepare(dev->clk_ahb);
2749         clk_disable_unprepare(dev->clk_per);
2750         pm_runtime_put_sync(dev->dev);
2751         v4l2_fh_del(&ctx->fh);
2752         v4l2_fh_exit(&ctx->fh);
2753         ida_free(&dev->ida, ctx->idx);
2754         if (ctx->ops->release)
2755                 ctx->ops->release(ctx);
2756         debugfs_remove_recursive(ctx->debugfs_entry);
2757         kfree(ctx);
2758
2759         return 0;
2760 }
2761
2762 static const struct v4l2_file_operations coda_fops = {
2763         .owner          = THIS_MODULE,
2764         .open           = coda_open,
2765         .release        = coda_release,
2766         .poll           = v4l2_m2m_fop_poll,
2767         .unlocked_ioctl = video_ioctl2,
2768         .mmap           = v4l2_m2m_fop_mmap,
2769 };
2770
2771 static int coda_hw_init(struct coda_dev *dev)
2772 {
2773         u32 data;
2774         u16 *p;
2775         int i, ret;
2776
2777         ret = clk_prepare_enable(dev->clk_per);
2778         if (ret)
2779                 goto err_clk_per;
2780
2781         ret = clk_prepare_enable(dev->clk_ahb);
2782         if (ret)
2783                 goto err_clk_ahb;
2784
2785         reset_control_reset(dev->rstc);
2786
2787         /*
2788          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2789          * The 16-bit chars in the code buffer are in memory access
2790          * order, re-sort them to CODA order for register download.
2791          * Data in this SRAM survives a reboot.
2792          */
2793         p = (u16 *)dev->codebuf.vaddr;
2794         if (dev->devtype->product == CODA_DX6) {
2795                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2796                         data = CODA_DOWN_ADDRESS_SET(i) |
2797                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2798                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2799                 }
2800         } else {
2801                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2802                         data = CODA_DOWN_ADDRESS_SET(i) |
2803                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2804                                                         3 - (i % 4)]);
2805                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2806                 }
2807         }
2808
2809         /* Clear registers */
2810         for (i = 0; i < 64; i++)
2811                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2812
2813         /* Tell the BIT where to find everything it needs */
2814         if (dev->devtype->product == CODA_960 ||
2815             dev->devtype->product == CODA_7541 ||
2816             dev->devtype->product == CODA_HX4) {
2817                 coda_write(dev, dev->tempbuf.paddr,
2818                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2819                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2820         } else {
2821                 coda_write(dev, dev->workbuf.paddr,
2822                               CODA_REG_BIT_WORK_BUF_ADDR);
2823         }
2824         coda_write(dev, dev->codebuf.paddr,
2825                       CODA_REG_BIT_CODE_BUF_ADDR);
2826         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2827
2828         /* Set default values */
2829         switch (dev->devtype->product) {
2830         case CODA_DX6:
2831                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2832                            CODA_REG_BIT_STREAM_CTRL);
2833                 break;
2834         default:
2835                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2836                            CODA_REG_BIT_STREAM_CTRL);
2837         }
2838         if (dev->devtype->product == CODA_960)
2839                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2840                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2841         else
2842                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2843
2844         if (dev->devtype->product != CODA_DX6)
2845                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2846
2847         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2848                       CODA_REG_BIT_INT_ENABLE);
2849
2850         /* Reset VPU and start processor */
2851         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2852         data |= CODA_REG_RESET_ENABLE;
2853         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2854         udelay(10);
2855         data &= ~CODA_REG_RESET_ENABLE;
2856         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2857         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2858
2859         clk_disable_unprepare(dev->clk_ahb);
2860         clk_disable_unprepare(dev->clk_per);
2861
2862         return 0;
2863
2864 err_clk_ahb:
2865         clk_disable_unprepare(dev->clk_per);
2866 err_clk_per:
2867         return ret;
2868 }
2869
2870 static int coda_register_device(struct coda_dev *dev, int i)
2871 {
2872         struct video_device *vfd = &dev->vfd[i];
2873         const char *name;
2874         int ret;
2875
2876         if (i >= dev->devtype->num_vdevs)
2877                 return -EINVAL;
2878         name = dev->devtype->vdevs[i]->name;
2879
2880         strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2881         vfd->fops       = &coda_fops;
2882         vfd->ioctl_ops  = &coda_ioctl_ops;
2883         vfd->release    = video_device_release_empty;
2884         vfd->lock       = &dev->dev_mutex;
2885         vfd->v4l2_dev   = &dev->v4l2_dev;
2886         vfd->vfl_dir    = VFL_DIR_M2M;
2887         vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
2888         video_set_drvdata(vfd, dev);
2889
2890         /* Not applicable, use the selection API instead */
2891         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2892         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2893         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2894
2895         if (dev->devtype->vdevs[i]->type == CODA_INST_ENCODER) {
2896                 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
2897                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
2898                 if (dev->devtype->vdevs[i]->dst_formats[0] == V4L2_PIX_FMT_JPEG) {
2899                         v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2900                         v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2901                         v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2902                 }
2903         } else {
2904                 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
2905                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
2906                 v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMESIZES);
2907                 v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2908                 v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2909                 v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2910         }
2911
2912         ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2913         if (!ret)
2914                 v4l2_info(&dev->v4l2_dev, "%s registered as %s\n",
2915                           name, video_device_node_name(vfd));
2916         return ret;
2917 }
2918
2919 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2920                                size_t size)
2921 {
2922         u32 *src = (u32 *)buf;
2923
2924         /* Check if the firmware has a 16-byte Freescale header, skip it */
2925         if (buf[0] == 'M' && buf[1] == 'X')
2926                 src += 4;
2927         /*
2928          * Check whether the firmware is in native order or pre-reordered for
2929          * memory access. The first instruction opcode always is 0xe40e.
2930          */
2931         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2932                 u32 *dst = dev->codebuf.vaddr;
2933                 int i;
2934
2935                 /* Firmware in native order, reorder while copying */
2936                 if (dev->devtype->product == CODA_DX6) {
2937                         for (i = 0; i < (size - 16) / 4; i++)
2938                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2939                 } else {
2940                         for (i = 0; i < (size - 16) / 4; i += 2) {
2941                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2942                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2943                         }
2944                 }
2945         } else {
2946                 /* Copy the already reordered firmware image */
2947                 memcpy(dev->codebuf.vaddr, src, size);
2948         }
2949 }
2950
2951 static void coda_fw_callback(const struct firmware *fw, void *context);
2952
2953 static int coda_firmware_request(struct coda_dev *dev)
2954 {
2955         char *fw;
2956
2957         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2958                 return -EINVAL;
2959
2960         fw = dev->devtype->firmware[dev->firmware];
2961
2962         dev_dbg(dev->dev, "requesting firmware '%s' for %s\n", fw,
2963                 coda_product_name(dev->devtype->product));
2964
2965         return request_firmware_nowait(THIS_MODULE, true, fw, dev->dev,
2966                                        GFP_KERNEL, dev, coda_fw_callback);
2967 }
2968
2969 static void coda_fw_callback(const struct firmware *fw, void *context)
2970 {
2971         struct coda_dev *dev = context;
2972         int i, ret;
2973
2974         if (!fw) {
2975                 dev->firmware++;
2976                 ret = coda_firmware_request(dev);
2977                 if (ret < 0) {
2978                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2979                         goto put_pm;
2980                 }
2981                 return;
2982         }
2983         if (dev->firmware > 0) {
2984                 /*
2985                  * Since we can't suppress warnings for failed asynchronous
2986                  * firmware requests, report that the fallback firmware was
2987                  * found.
2988                  */
2989                 dev_info(dev->dev, "Using fallback firmware %s\n",
2990                          dev->devtype->firmware[dev->firmware]);
2991         }
2992
2993         /* allocate auxiliary per-device code buffer for the BIT processor */
2994         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2995                                  dev->debugfs_root);
2996         if (ret < 0)
2997                 goto put_pm;
2998
2999         coda_copy_firmware(dev, fw->data, fw->size);
3000         release_firmware(fw);
3001
3002         ret = coda_hw_init(dev);
3003         if (ret < 0) {
3004                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
3005                 goto put_pm;
3006         }
3007
3008         ret = coda_check_firmware(dev);
3009         if (ret < 0)
3010                 goto put_pm;
3011
3012         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
3013         if (IS_ERR(dev->m2m_dev)) {
3014                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
3015                 goto put_pm;
3016         }
3017
3018         for (i = 0; i < dev->devtype->num_vdevs; i++) {
3019                 ret = coda_register_device(dev, i);
3020                 if (ret) {
3021                         v4l2_err(&dev->v4l2_dev,
3022                                  "Failed to register %s video device: %d\n",
3023                                  dev->devtype->vdevs[i]->name, ret);
3024                         goto rel_vfd;
3025                 }
3026         }
3027
3028         pm_runtime_put_sync(dev->dev);
3029         return;
3030
3031 rel_vfd:
3032         while (--i >= 0)
3033                 video_unregister_device(&dev->vfd[i]);
3034         v4l2_m2m_release(dev->m2m_dev);
3035 put_pm:
3036         pm_runtime_put_sync(dev->dev);
3037 }
3038
3039 enum coda_platform {
3040         CODA_IMX27,
3041         CODA_IMX51,
3042         CODA_IMX53,
3043         CODA_IMX6Q,
3044         CODA_IMX6DL,
3045 };
3046
3047 static const struct coda_devtype coda_devdata[] = {
3048         [CODA_IMX27] = {
3049                 .firmware     = {
3050                         "vpu_fw_imx27_TO2.bin",
3051                         "vpu/vpu_fw_imx27_TO2.bin",
3052                         "v4l-codadx6-imx27.bin"
3053                 },
3054                 .product      = CODA_DX6,
3055                 .codecs       = codadx6_codecs,
3056                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
3057                 .vdevs        = codadx6_video_devices,
3058                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
3059                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
3060                 .iram_size    = 0xb000,
3061         },
3062         [CODA_IMX51] = {
3063                 .firmware     = {
3064                         "vpu_fw_imx51.bin",
3065                         "vpu/vpu_fw_imx51.bin",
3066                         "v4l-codahx4-imx51.bin"
3067                 },
3068                 .product      = CODA_HX4,
3069                 .codecs       = codahx4_codecs,
3070                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
3071                 .vdevs        = codahx4_video_devices,
3072                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
3073                 .workbuf_size = 128 * 1024,
3074                 .tempbuf_size = 304 * 1024,
3075                 .iram_size    = 0x14000,
3076         },
3077         [CODA_IMX53] = {
3078                 .firmware     = {
3079                         "vpu_fw_imx53.bin",
3080                         "vpu/vpu_fw_imx53.bin",
3081                         "v4l-coda7541-imx53.bin"
3082                 },
3083                 .product      = CODA_7541,
3084                 .codecs       = coda7_codecs,
3085                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
3086                 .vdevs        = coda7_video_devices,
3087                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
3088                 .workbuf_size = 128 * 1024,
3089                 .tempbuf_size = 304 * 1024,
3090                 .iram_size    = 0x14000,
3091         },
3092         [CODA_IMX6Q] = {
3093                 .firmware     = {
3094                         "vpu_fw_imx6q.bin",
3095                         "vpu/vpu_fw_imx6q.bin",
3096                         "v4l-coda960-imx6q.bin"
3097                 },
3098                 .product      = CODA_960,
3099                 .codecs       = coda9_codecs,
3100                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3101                 .vdevs        = coda9_video_devices,
3102                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3103                 .workbuf_size = 80 * 1024,
3104                 .tempbuf_size = 204 * 1024,
3105                 .iram_size    = 0x21000,
3106         },
3107         [CODA_IMX6DL] = {
3108                 .firmware     = {
3109                         "vpu_fw_imx6d.bin",
3110                         "vpu/vpu_fw_imx6d.bin",
3111                         "v4l-coda960-imx6dl.bin"
3112                 },
3113                 .product      = CODA_960,
3114                 .codecs       = coda9_codecs,
3115                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3116                 .vdevs        = coda9_video_devices,
3117                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3118                 .workbuf_size = 80 * 1024,
3119                 .tempbuf_size = 204 * 1024,
3120                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
3121         },
3122 };
3123
3124 static const struct of_device_id coda_dt_ids[] = {
3125         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3126         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
3127         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3128         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
3129         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
3130         { /* sentinel */ }
3131 };
3132 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3133
3134 static int coda_probe(struct platform_device *pdev)
3135 {
3136         struct device_node *np = pdev->dev.of_node;
3137         struct gen_pool *pool;
3138         struct coda_dev *dev;
3139         int ret, irq;
3140
3141         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
3142         if (!dev)
3143                 return -ENOMEM;
3144
3145         dev->devtype = of_device_get_match_data(&pdev->dev);
3146
3147         dev->dev = &pdev->dev;
3148         dev->clk_per = devm_clk_get(&pdev->dev, "per");
3149         if (IS_ERR(dev->clk_per)) {
3150                 dev_err(&pdev->dev, "Could not get per clock\n");
3151                 return PTR_ERR(dev->clk_per);
3152         }
3153
3154         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3155         if (IS_ERR(dev->clk_ahb)) {
3156                 dev_err(&pdev->dev, "Could not get ahb clock\n");
3157                 return PTR_ERR(dev->clk_ahb);
3158         }
3159
3160         /* Get  memory for physical registers */
3161         dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
3162         if (IS_ERR(dev->regs_base))
3163                 return PTR_ERR(dev->regs_base);
3164
3165         /* IRQ */
3166         irq = platform_get_irq_byname(pdev, "bit");
3167         if (irq < 0)
3168                 irq = platform_get_irq(pdev, 0);
3169         if (irq < 0)
3170                 return irq;
3171
3172         ret = devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0,
3173                                CODA_NAME "-video", dev);
3174         if (ret < 0) {
3175                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
3176                 return ret;
3177         }
3178
3179         /* JPEG IRQ */
3180         if (dev->devtype->product == CODA_960) {
3181                 irq = platform_get_irq_byname(pdev, "jpeg");
3182                 if (irq < 0)
3183                         return irq;
3184
3185                 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
3186                                                 coda9_jpeg_irq_handler,
3187                                                 IRQF_ONESHOT, CODA_NAME "-jpeg",
3188                                                 dev);
3189                 if (ret < 0) {
3190                         dev_err(&pdev->dev, "failed to request jpeg irq\n");
3191                         return ret;
3192                 }
3193         }
3194
3195         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
3196                                                               NULL);
3197         if (IS_ERR(dev->rstc)) {
3198                 ret = PTR_ERR(dev->rstc);
3199                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
3200                 return ret;
3201         }
3202
3203         /* Get IRAM pool from device tree */
3204         pool = of_gen_pool_get(np, "iram", 0);
3205         if (!pool) {
3206                 dev_err(&pdev->dev, "iram pool not available\n");
3207                 return -ENOMEM;
3208         }
3209         dev->iram_pool = pool;
3210
3211         /* Get vdoa_data if supported by the platform */
3212         dev->vdoa = coda_get_vdoa_data();
3213         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
3214                 return -EPROBE_DEFER;
3215
3216         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3217         if (ret)
3218                 return ret;
3219
3220         ratelimit_default_init(&dev->mb_err_rs);
3221         mutex_init(&dev->dev_mutex);
3222         mutex_init(&dev->coda_mutex);
3223         ida_init(&dev->ida);
3224
3225         dev->debugfs_root = debugfs_create_dir("coda", NULL);
3226
3227         /* allocate auxiliary per-device buffers for the BIT processor */
3228         if (dev->devtype->product == CODA_DX6) {
3229                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3230                                          dev->devtype->workbuf_size, "workbuf",
3231                                          dev->debugfs_root);
3232                 if (ret < 0)
3233                         goto err_v4l2_register;
3234         }
3235
3236         if (dev->devtype->tempbuf_size) {
3237                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3238                                          dev->devtype->tempbuf_size, "tempbuf",
3239                                          dev->debugfs_root);
3240                 if (ret < 0)
3241                         goto err_v4l2_register;
3242         }
3243
3244         dev->iram.size = dev->devtype->iram_size;
3245         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
3246                                              &dev->iram.paddr);
3247         if (!dev->iram.vaddr) {
3248                 dev_warn(&pdev->dev, "unable to alloc iram\n");
3249         } else {
3250                 memset(dev->iram.vaddr, 0, dev->iram.size);
3251                 dev->iram.blob.data = dev->iram.vaddr;
3252                 dev->iram.blob.size = dev->iram.size;
3253                 dev->iram.dentry = debugfs_create_blob("iram", 0444,
3254                                                        dev->debugfs_root,
3255                                                        &dev->iram.blob);
3256         }
3257
3258         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
3259         if (!dev->workqueue) {
3260                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
3261                 ret = -ENOMEM;
3262                 goto err_v4l2_register;
3263         }
3264
3265         platform_set_drvdata(pdev, dev);
3266
3267         /*
3268          * Start activated so we can directly call coda_hw_init in
3269          * coda_fw_callback regardless of whether CONFIG_PM is
3270          * enabled or whether the device is associated with a PM domain.
3271          */
3272         pm_runtime_get_noresume(&pdev->dev);
3273         pm_runtime_set_active(&pdev->dev);
3274         pm_runtime_enable(&pdev->dev);
3275
3276         ret = coda_firmware_request(dev);
3277         if (ret)
3278                 goto err_alloc_workqueue;
3279         return 0;
3280
3281 err_alloc_workqueue:
3282         pm_runtime_disable(&pdev->dev);
3283         pm_runtime_put_noidle(&pdev->dev);
3284         destroy_workqueue(dev->workqueue);
3285 err_v4l2_register:
3286         v4l2_device_unregister(&dev->v4l2_dev);
3287         return ret;
3288 }
3289
3290 static int coda_remove(struct platform_device *pdev)
3291 {
3292         struct coda_dev *dev = platform_get_drvdata(pdev);
3293         int i;
3294
3295         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
3296                 if (video_get_drvdata(&dev->vfd[i]))
3297                         video_unregister_device(&dev->vfd[i]);
3298         }
3299         if (dev->m2m_dev)
3300                 v4l2_m2m_release(dev->m2m_dev);
3301         pm_runtime_disable(&pdev->dev);
3302         v4l2_device_unregister(&dev->v4l2_dev);
3303         destroy_workqueue(dev->workqueue);
3304         if (dev->iram.vaddr)
3305                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
3306                               dev->iram.size);
3307         coda_free_aux_buf(dev, &dev->codebuf);
3308         coda_free_aux_buf(dev, &dev->tempbuf);
3309         coda_free_aux_buf(dev, &dev->workbuf);
3310         debugfs_remove_recursive(dev->debugfs_root);
3311         ida_destroy(&dev->ida);
3312         return 0;
3313 }
3314
3315 #ifdef CONFIG_PM
3316 static int coda_runtime_resume(struct device *dev)
3317 {
3318         struct coda_dev *cdev = dev_get_drvdata(dev);
3319         int ret = 0;
3320
3321         if (dev->pm_domain && cdev->codebuf.vaddr) {
3322                 ret = coda_hw_init(cdev);
3323                 if (ret)
3324                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
3325         }
3326
3327         return ret;
3328 }
3329 #endif
3330
3331 static const struct dev_pm_ops coda_pm_ops = {
3332         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
3333 };
3334
3335 static struct platform_driver coda_driver = {
3336         .probe  = coda_probe,
3337         .remove = coda_remove,
3338         .driver = {
3339                 .name   = CODA_NAME,
3340                 .of_match_table = coda_dt_ids,
3341                 .pm     = &coda_pm_ops,
3342         },
3343 };
3344
3345 module_platform_driver(coda_driver);
3346
3347 MODULE_LICENSE("GPL");
3348 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
3349 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");