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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Coda multi-standard codec IP
   4  *
   5  * Copyright (C) 2012 Vista Silicon S.L.
   6  *    Javier Martin, <javier.martin@vista-silicon.com>
   7  *    Xavier Duret
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/delay.h>
  13 #include <linux/firmware.h>
  14 #include <linux/gcd.h>
  15 #include <linux/genalloc.h>
  16 #include <linux/idr.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/irq.h>
  20 #include <linux/kfifo.h>
  21 #include <linux/module.h>
  22 #include <linux/of_device.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/of.h>
  28 #include <linux/ratelimit.h>
  29 #include <linux/reset.h>
  30
  31 #include <media/v4l2-ctrls.h>
  32 #include <media/v4l2-device.h>
  33 #include <media/v4l2-event.h>
  34 #include <media/v4l2-ioctl.h>
  35 #include <media/v4l2-mem2mem.h>
  36 #include <media/videobuf2-v4l2.h>
  37 #include <media/videobuf2-dma-contig.h>
  38 #include <media/videobuf2-vmalloc.h>
  39
  40 #include "coda.h"
  41 #include "imx-vdoa.h"
  42
  43 #define CODA_NAME               "coda"
  44
  45 #define CODADX6_MAX_INSTANCES   4
  46 #define CODA_MAX_FORMATS        4
  47
  48 #define CODA_ISRAM_SIZE (2048 * 2)
  49
  50 #define MIN_W 48
  51 #define MIN_H 16
  52
  53 #define S_ALIGN         1 /* multiple of 2 */
  54 #define W_ALIGN         1 /* multiple of 2 */
  55 #define H_ALIGN         1 /* multiple of 2 */
  56
  57 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  58
  59 int coda_debug;
  60 module_param(coda_debug, int, 0644);
  61 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
  62
  63 static int disable_tiling;
  64 module_param(disable_tiling, int, 0644);
  65 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
  66
  67 static int disable_vdoa;
  68 module_param(disable_vdoa, int, 0644);
  69 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
  70
  71 static int enable_bwb = 0;
  72 module_param(enable_bwb, int, 0644);
  73 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
  74
  75 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
  76 {
  77         v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
  78                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  79         writel(data, dev->regs_base + reg);
  80 }
  81
  82 unsigned int coda_read(struct coda_dev *dev, u32 reg)
  83 {
  84         u32 data;
  85
  86         data = readl(dev->regs_base + reg);
  87         v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
  88                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  89         return data;
  90 }
  91
  92 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
  93                      struct vb2_v4l2_buffer *buf, unsigned int reg_y)
  94 {
  95         u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
  96         u32 base_cb, base_cr;
  97
  98         switch (q_data->fourcc) {
  99         case V4L2_PIX_FMT_YUYV:
 100                 /* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
 101         case V4L2_PIX_FMT_NV12:
 102         case V4L2_PIX_FMT_YUV420:
 103         default:
 104                 base_cb = base_y + q_data->bytesperline * q_data->height;
 105                 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
 106                 break;
 107         case V4L2_PIX_FMT_YVU420:
 108                 /* Switch Cb and Cr for YVU420 format */
 109                 base_cr = base_y + q_data->bytesperline * q_data->height;
 110                 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
 111                 break;
 112         case V4L2_PIX_FMT_YUV422P:
 113                 base_cb = base_y + q_data->bytesperline * q_data->height;
 114                 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
 115         }
 116
 117         coda_write(ctx->dev, base_y, reg_y);
 118         coda_write(ctx->dev, base_cb, reg_y + 4);
 119         coda_write(ctx->dev, base_cr, reg_y + 8);
 120 }
 121
 122 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
 123         { mode, src_fourcc, dst_fourcc, max_w, max_h }
 124
 125 /*
 126  * Arrays of codecs supported by each given version of Coda:
 127  *  i.MX27 -> codadx6
 128  *  i.MX51 -> codahx4
 129  *  i.MX53 -> coda7
 130  *  i.MX6  -> coda960
 131  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
 132  */
 133 static const struct coda_codec codadx6_codecs[] = {
 134         CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
 135         CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
 136 };
 137
 138 static const struct coda_codec codahx4_codecs[] = {
 139         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   720, 576),
 140         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 141         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 142         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1280, 720),
 143 };
 144
 145 static const struct coda_codec coda7_codecs[] = {
 146         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
 147         CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
 148         CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 149         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 150         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 151         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 152         CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 153 };
 154
 155 static const struct coda_codec coda9_codecs[] = {
 156         CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
 157         CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
 158         CODA_CODEC(CODA9_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 159         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 160         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 161         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 162         CODA_CODEC(CODA9_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 163 };
 164
 165 struct coda_video_device {
 166         const char *name;
 167         enum coda_inst_type type;
 168         const struct coda_context_ops *ops;
 169         bool direct;
 170         u32 src_formats[CODA_MAX_FORMATS];
 171         u32 dst_formats[CODA_MAX_FORMATS];
 172 };
 173
 174 static const struct coda_video_device coda_bit_encoder = {
 175         .name = "coda-video-encoder",
 176         .type = CODA_INST_ENCODER,
 177         .ops = &coda_bit_encode_ops,
 178         .src_formats = {
 179                 V4L2_PIX_FMT_NV12,
 180                 V4L2_PIX_FMT_YUV420,
 181                 V4L2_PIX_FMT_YVU420,
 182         },
 183         .dst_formats = {
 184                 V4L2_PIX_FMT_H264,
 185                 V4L2_PIX_FMT_MPEG4,
 186         },
 187 };
 188
 189 static const struct coda_video_device coda_bit_jpeg_encoder = {
 190         .name = "coda-jpeg-encoder",
 191         .type = CODA_INST_ENCODER,
 192         .ops = &coda_bit_encode_ops,
 193         .src_formats = {
 194                 V4L2_PIX_FMT_NV12,
 195                 V4L2_PIX_FMT_YUV420,
 196                 V4L2_PIX_FMT_YVU420,
 197                 V4L2_PIX_FMT_YUV422P,
 198         },
 199         .dst_formats = {
 200                 V4L2_PIX_FMT_JPEG,
 201         },
 202 };
 203
 204 static const struct coda_video_device coda_bit_decoder = {
 205         .name = "coda-video-decoder",
 206         .type = CODA_INST_DECODER,
 207         .ops = &coda_bit_decode_ops,
 208         .src_formats = {
 209                 V4L2_PIX_FMT_H264,
 210                 V4L2_PIX_FMT_MPEG2,
 211                 V4L2_PIX_FMT_MPEG4,
 212         },
 213         .dst_formats = {
 214                 V4L2_PIX_FMT_NV12,
 215                 V4L2_PIX_FMT_YUV420,
 216                 V4L2_PIX_FMT_YVU420,
 217                 /*
 218                  * If V4L2_PIX_FMT_YUYV should be default,
 219                  * set_default_params() must be adjusted.
 220                  */
 221                 V4L2_PIX_FMT_YUYV,
 222         },
 223 };
 224
 225 static const struct coda_video_device coda_bit_jpeg_decoder = {
 226         .name = "coda-jpeg-decoder",
 227         .type = CODA_INST_DECODER,
 228         .ops = &coda_bit_decode_ops,
 229         .src_formats = {
 230                 V4L2_PIX_FMT_JPEG,
 231         },
 232         .dst_formats = {
 233                 V4L2_PIX_FMT_NV12,
 234                 V4L2_PIX_FMT_YUV420,
 235                 V4L2_PIX_FMT_YVU420,
 236                 V4L2_PIX_FMT_YUV422P,
 237         },
 238 };
 239
 240 static const struct coda_video_device coda9_jpeg_encoder = {
 241         .name = "coda-jpeg-encoder",
 242         .type = CODA_INST_ENCODER,
 243         .ops = &coda9_jpeg_encode_ops,
 244         .direct = true,
 245         .src_formats = {
 246                 V4L2_PIX_FMT_NV12,
 247                 V4L2_PIX_FMT_YUV420,
 248                 V4L2_PIX_FMT_YVU420,
 249                 V4L2_PIX_FMT_YUV422P,
 250         },
 251         .dst_formats = {
 252                 V4L2_PIX_FMT_JPEG,
 253         },
 254 };
 255
 256 static const struct coda_video_device coda9_jpeg_decoder = {
 257         .name = "coda-jpeg-decoder",
 258         .type = CODA_INST_DECODER,
 259         .ops = &coda9_jpeg_decode_ops,
 260         .direct = true,
 261         .src_formats = {
 262                 V4L2_PIX_FMT_JPEG,
 263         },
 264         .dst_formats = {
 265                 V4L2_PIX_FMT_NV12,
 266                 V4L2_PIX_FMT_YUV420,
 267                 V4L2_PIX_FMT_YVU420,
 268                 V4L2_PIX_FMT_YUV422P,
 269         },
 270 };
 271
 272 static const struct coda_video_device *codadx6_video_devices[] = {
 273         &coda_bit_encoder,
 274 };
 275
 276 static const struct coda_video_device *codahx4_video_devices[] = {
 277         &coda_bit_encoder,
 278         &coda_bit_decoder,
 279 };
 280
 281 static const struct coda_video_device *coda7_video_devices[] = {
 282         &coda_bit_jpeg_encoder,
 283         &coda_bit_jpeg_decoder,
 284         &coda_bit_encoder,
 285         &coda_bit_decoder,
 286 };
 287
 288 static const struct coda_video_device *coda9_video_devices[] = {
 289         &coda9_jpeg_encoder,
 290         &coda9_jpeg_decoder,
 291         &coda_bit_encoder,
 292         &coda_bit_decoder,
 293 };
 294
 295 /*
 296  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 297  * tables.
 298  */
 299 static u32 coda_format_normalize_yuv(u32 fourcc)
 300 {
 301         switch (fourcc) {
 302         case V4L2_PIX_FMT_NV12:
 303         case V4L2_PIX_FMT_YUV420:
 304         case V4L2_PIX_FMT_YVU420:
 305         case V4L2_PIX_FMT_YUV422P:
 306         case V4L2_PIX_FMT_YUYV:
 307                 return V4L2_PIX_FMT_YUV420;
 308         default:
 309                 return fourcc;
 310         }
 311 }
 312
 313 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 314                                                 int src_fourcc, int dst_fourcc)
 315 {
 316         const struct coda_codec *codecs = dev->devtype->codecs;
 317         int num_codecs = dev->devtype->num_codecs;
 318         int k;
 319
 320         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 321         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 322         if (src_fourcc == dst_fourcc)
 323                 return NULL;
 324
 325         for (k = 0; k < num_codecs; k++) {
 326                 if (codecs[k].src_fourcc == src_fourcc &&
 327                     codecs[k].dst_fourcc == dst_fourcc)
 328                         break;
 329         }
 330
 331         if (k == num_codecs)
 332                 return NULL;
 333
 334         return &codecs[k];
 335 }
 336
 337 static void coda_get_max_dimensions(struct coda_dev *dev,
 338                                     const struct coda_codec *codec,
 339                                     int *max_w, int *max_h)
 340 {
 341         const struct coda_codec *codecs = dev->devtype->codecs;
 342         int num_codecs = dev->devtype->num_codecs;
 343         unsigned int w, h;
 344         int k;
 345
 346         if (codec) {
 347                 w = codec->max_w;
 348                 h = codec->max_h;
 349         } else {
 350                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 351                         w = max(w, codecs[k].max_w);
 352                         h = max(h, codecs[k].max_h);
 353                 }
 354         }
 355
 356         if (max_w)
 357                 *max_w = w;
 358         if (max_h)
 359                 *max_h = h;
 360 }
 361
 362 static const struct coda_video_device *to_coda_video_device(struct video_device
 363                                                             *vdev)
 364 {
 365         struct coda_dev *dev = video_get_drvdata(vdev);
 366         unsigned int i = vdev - dev->vfd;
 367
 368         if (i >= dev->devtype->num_vdevs)
 369                 return NULL;
 370
 371         return dev->devtype->vdevs[i];
 372 }
 373
 374 const char *coda_product_name(int product)
 375 {
 376         static char buf[9];
 377
 378         switch (product) {
 379         case CODA_DX6:
 380                 return "CodaDx6";
 381         case CODA_HX4:
 382                 return "CodaHx4";
 383         case CODA_7541:
 384                 return "CODA7541";
 385         case CODA_960:
 386                 return "CODA960";
 387         default:
 388                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 389                 return buf;
 390         }
 391 }
 392
 393 static struct vdoa_data *coda_get_vdoa_data(void)
 394 {
 395         struct device_node *vdoa_node;
 396         struct platform_device *vdoa_pdev;
 397         struct vdoa_data *vdoa_data = NULL;
 398
 399         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 400         if (!vdoa_node)
 401                 return NULL;
 402
 403         vdoa_pdev = of_find_device_by_node(vdoa_node);
 404         if (!vdoa_pdev)
 405                 goto out;
 406
 407         vdoa_data = platform_get_drvdata(vdoa_pdev);
 408         if (!vdoa_data)
 409                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 410
 411         put_device(&vdoa_pdev->dev);
 412 out:
 413         of_node_put(vdoa_node);
 414
 415         return vdoa_data;
 416 }
 417
 418 /*
 419  * V4L2 ioctl() operations.
 420  */
 421 static int coda_querycap(struct file *file, void *priv,
 422                          struct v4l2_capability *cap)
 423 {
 424         struct coda_ctx *ctx = fh_to_ctx(priv);
 425
 426         strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 427         strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 428                 sizeof(cap->card));
 429         strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 430         return 0;
 431 }
 432
 433 static const u32 coda_formats_420[CODA_MAX_FORMATS] = {
 434                 V4L2_PIX_FMT_NV12,
 435                 V4L2_PIX_FMT_YUV420,
 436                 V4L2_PIX_FMT_YVU420,
 437 };
 438
 439 static int coda_enum_fmt(struct file *file, void *priv,
 440                          struct v4l2_fmtdesc *f)
 441 {
 442         struct video_device *vdev = video_devdata(file);
 443         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 444         struct coda_ctx *ctx = fh_to_ctx(priv);
 445         const u32 *formats;
 446
 447         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 448                 formats = cvd->src_formats;
 449         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 450                 struct coda_q_data *q_data_src;
 451                 struct vb2_queue *src_vq;
 452
 453                 formats = cvd->dst_formats;
 454
 455                 /*
 456                  * If the source format is already fixed, only allow the same
 457                  * chroma subsampling.
 458                  */
 459                 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 460                 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
 461                                          V4L2_BUF_TYPE_VIDEO_OUTPUT);
 462                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 463                     vb2_is_streaming(src_vq)) {
 464                         if (ctx->params.jpeg_chroma_subsampling ==
 465                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
 466                                 formats = coda_formats_420;
 467                         } else if (ctx->params.jpeg_chroma_subsampling ==
 468                                    V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
 469                                 f->pixelformat = V4L2_PIX_FMT_YUV422P;
 470                                 return f->index ? -EINVAL : 0;
 471                         }
 472                 }
 473         } else {
 474                 return -EINVAL;
 475         }
 476
 477         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 478                 return -EINVAL;
 479
 480         /* Skip YUYV if the vdoa is not available */
 481         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 482             formats[f->index] == V4L2_PIX_FMT_YUYV)
 483                 return -EINVAL;
 484
 485         f->pixelformat = formats[f->index];
 486
 487         return 0;
 488 }
 489
 490 static int coda_g_fmt(struct file *file, void *priv,
 491                       struct v4l2_format *f)
 492 {
 493         struct coda_q_data *q_data;
 494         struct coda_ctx *ctx = fh_to_ctx(priv);
 495
 496         q_data = get_q_data(ctx, f->type);
 497         if (!q_data)
 498                 return -EINVAL;
 499
 500         f->fmt.pix.field        = V4L2_FIELD_NONE;
 501         f->fmt.pix.pixelformat  = q_data->fourcc;
 502         f->fmt.pix.width        = q_data->width;
 503         f->fmt.pix.height       = q_data->height;
 504         f->fmt.pix.bytesperline = q_data->bytesperline;
 505
 506         f->fmt.pix.sizeimage    = q_data->sizeimage;
 507         f->fmt.pix.colorspace   = ctx->colorspace;
 508         f->fmt.pix.xfer_func    = ctx->xfer_func;
 509         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 510         f->fmt.pix.quantization = ctx->quantization;
 511
 512         return 0;
 513 }
 514
 515 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 516 {
 517         struct coda_q_data *q_data;
 518         const u32 *formats;
 519         int i;
 520
 521         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 522                 formats = ctx->cvd->src_formats;
 523         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 524                 formats = ctx->cvd->dst_formats;
 525         else
 526                 return -EINVAL;
 527
 528         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 529                 /* Skip YUYV if the vdoa is not available */
 530                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 531                     formats[i] == V4L2_PIX_FMT_YUYV)
 532                         continue;
 533
 534                 if (formats[i] == f->fmt.pix.pixelformat) {
 535                         f->fmt.pix.pixelformat = formats[i];
 536                         return 0;
 537                 }
 538         }
 539
 540         /* Fall back to currently set pixelformat */
 541         q_data = get_q_data(ctx, f->type);
 542         f->fmt.pix.pixelformat = q_data->fourcc;
 543
 544         return 0;
 545 }
 546
 547 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 548                              bool *use_vdoa)
 549 {
 550         int err;
 551
 552         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 553                 return -EINVAL;
 554
 555         if (!use_vdoa)
 556                 return -EINVAL;
 557
 558         if (!ctx->vdoa) {
 559                 *use_vdoa = false;
 560                 return 0;
 561         }
 562
 563         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 564                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 565         if (err) {
 566                 *use_vdoa = false;
 567                 return 0;
 568         }
 569
 570         *use_vdoa = true;
 571         return 0;
 572 }
 573
 574 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 575                                             u32 width, u32 height)
 576 {
 577         /*
 578          * This is a rough estimate for sensible compressed buffer
 579          * sizes (between 1 and 16 bits per pixel). This could be
 580          * improved by better format specific worst case estimates.
 581          */
 582         return round_up(clamp(sizeimage, width * height / 8,
 583                                          width * height * 2), PAGE_SIZE);
 584 }
 585
 586 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 587                         struct v4l2_format *f)
 588 {
 589         struct coda_dev *dev = ctx->dev;
 590         unsigned int max_w, max_h;
 591         enum v4l2_field field;
 592
 593         field = f->fmt.pix.field;
 594         if (field == V4L2_FIELD_ANY)
 595                 field = V4L2_FIELD_NONE;
 596         else if (V4L2_FIELD_NONE != field)
 597                 return -EINVAL;
 598
 599         /* V4L2 specification suggests the driver corrects the format struct
 600          * if any of the dimensions is unsupported */
 601         f->fmt.pix.field = field;
 602
 603         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 604         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 605                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 606                               S_ALIGN);
 607
 608         switch (f->fmt.pix.pixelformat) {
 609         case V4L2_PIX_FMT_NV12:
 610         case V4L2_PIX_FMT_YUV420:
 611         case V4L2_PIX_FMT_YVU420:
 612                 /*
 613                  * Frame stride must be at least multiple of 8,
 614                  * but multiple of 16 for h.264 or JPEG 4:2:x
 615                  */
 616                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 617                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 618                                         f->fmt.pix.height * 3 / 2;
 619                 break;
 620         case V4L2_PIX_FMT_YUYV:
 621                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 622                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 623                                         f->fmt.pix.height;
 624                 break;
 625         case V4L2_PIX_FMT_YUV422P:
 626                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 627                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 628                                         f->fmt.pix.height * 2;
 629                 break;
 630         case V4L2_PIX_FMT_JPEG:
 631         case V4L2_PIX_FMT_H264:
 632         case V4L2_PIX_FMT_MPEG4:
 633         case V4L2_PIX_FMT_MPEG2:
 634                 f->fmt.pix.bytesperline = 0;
 635                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 636                                                         f->fmt.pix.sizeimage,
 637                                                         f->fmt.pix.width,
 638                                                         f->fmt.pix.height);
 639                 break;
 640         default:
 641                 BUG();
 642         }
 643
 644         return 0;
 645 }
 646
 647 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 648                                 struct v4l2_format *f)
 649 {
 650         struct coda_ctx *ctx = fh_to_ctx(priv);
 651         const struct coda_q_data *q_data_src;
 652         const struct coda_codec *codec;
 653         struct vb2_queue *src_vq;
 654         int ret;
 655         bool use_vdoa;
 656
 657         ret = coda_try_pixelformat(ctx, f);
 658         if (ret < 0)
 659                 return ret;
 660
 661         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 662
 663         /*
 664          * If the source format is already fixed, only allow the same output
 665          * resolution. When decoding JPEG images, we also have to make sure to
 666          * use the same chroma subsampling.
 667          */
 668         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 669         if (vb2_is_streaming(src_vq)) {
 670                 f->fmt.pix.width = q_data_src->width;
 671                 f->fmt.pix.height = q_data_src->height;
 672
 673                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
 674                         if (ctx->params.jpeg_chroma_subsampling ==
 675                             V4L2_JPEG_CHROMA_SUBSAMPLING_420 &&
 676                             f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P)
 677                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
 678                         else if (ctx->params.jpeg_chroma_subsampling ==
 679                                  V4L2_JPEG_CHROMA_SUBSAMPLING_422)
 680                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 681                 }
 682         }
 683
 684         f->fmt.pix.colorspace = ctx->colorspace;
 685         f->fmt.pix.xfer_func = ctx->xfer_func;
 686         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 687         f->fmt.pix.quantization = ctx->quantization;
 688
 689         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 690         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 691                                 f->fmt.pix.pixelformat);
 692         if (!codec)
 693                 return -EINVAL;
 694
 695         ret = coda_try_fmt(ctx, codec, f);
 696         if (ret < 0)
 697                 return ret;
 698
 699         /* The decoders always write complete macroblocks or MCUs */
 700         if (ctx->inst_type == CODA_INST_DECODER) {
 701                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 702                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
 703                 if (codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
 704                     f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
 705                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 706                                                f->fmt.pix.height * 2;
 707                 } else {
 708                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 709                                                f->fmt.pix.height * 3 / 2;
 710                 }
 711
 712                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 713                 if (ret < 0)
 714                         return ret;
 715
 716                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 717                         if (!use_vdoa)
 718                                 return -EINVAL;
 719
 720                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 721                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 722                                 f->fmt.pix.height;
 723                 }
 724         }
 725
 726         return 0;
 727 }
 728
 729 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 730 {
 731         enum v4l2_colorspace colorspace;
 732
 733         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 734                 colorspace = V4L2_COLORSPACE_JPEG;
 735         else if (fmt->width <= 720 && fmt->height <= 576)
 736                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 737         else
 738                 colorspace = V4L2_COLORSPACE_REC709;
 739
 740         fmt->colorspace = colorspace;
 741         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 742         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 743         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 744 }
 745
 746 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 747                                 struct v4l2_format *f)
 748 {
 749         struct coda_ctx *ctx = fh_to_ctx(priv);
 750         struct coda_dev *dev = ctx->dev;
 751         const struct coda_q_data *q_data_dst;
 752         const struct coda_codec *codec;
 753         int ret;
 754
 755         ret = coda_try_pixelformat(ctx, f);
 756         if (ret < 0)
 757                 return ret;
 758
 759         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 760                 coda_set_default_colorspace(&f->fmt.pix);
 761
 762         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 763         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 764
 765         return coda_try_fmt(ctx, codec, f);
 766 }
 767
 768 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 769                       struct v4l2_rect *r)
 770 {
 771         struct coda_q_data *q_data;
 772         struct vb2_queue *vq;
 773
 774         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 775         if (!vq)
 776                 return -EINVAL;
 777
 778         q_data = get_q_data(ctx, f->type);
 779         if (!q_data)
 780                 return -EINVAL;
 781
 782         if (vb2_is_busy(vq)) {
 783                 v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
 784                          __func__, v4l2_type_names[f->type], vq->num_buffers);
 785                 return -EBUSY;
 786         }
 787
 788         q_data->fourcc = f->fmt.pix.pixelformat;
 789         q_data->width = f->fmt.pix.width;
 790         q_data->height = f->fmt.pix.height;
 791         q_data->bytesperline = f->fmt.pix.bytesperline;
 792         q_data->sizeimage = f->fmt.pix.sizeimage;
 793         if (r) {
 794                 q_data->rect = *r;
 795         } else {
 796                 q_data->rect.left = 0;
 797                 q_data->rect.top = 0;
 798                 q_data->rect.width = f->fmt.pix.width;
 799                 q_data->rect.height = f->fmt.pix.height;
 800         }
 801
 802         switch (f->fmt.pix.pixelformat) {
 803         case V4L2_PIX_FMT_YUYV:
 804                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 805                 break;
 806         case V4L2_PIX_FMT_NV12:
 807                 if (!disable_tiling && ctx->use_bit &&
 808                     ctx->dev->devtype->product == CODA_960) {
 809                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 810                         break;
 811                 }
 812                 fallthrough;
 813         case V4L2_PIX_FMT_YUV420:
 814         case V4L2_PIX_FMT_YVU420:
 815         case V4L2_PIX_FMT_YUV422P:
 816                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 817                 break;
 818         default:
 819                 break;
 820         }
 821
 822         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 823             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 824             ctx->use_vdoa)
 825                 vdoa_context_configure(ctx->vdoa,
 826                                        round_up(f->fmt.pix.width, 16),
 827                                        f->fmt.pix.height,
 828                                        f->fmt.pix.pixelformat);
 829         else
 830                 ctx->use_vdoa = false;
 831
 832         coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
 833                  v4l2_type_names[f->type], q_data->width, q_data->height,
 834                  (char *)&q_data->fourcc,
 835                  (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 836
 837         return 0;
 838 }
 839
 840 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 841                               struct v4l2_format *f)
 842 {
 843         struct coda_ctx *ctx = fh_to_ctx(priv);
 844         struct coda_q_data *q_data_src;
 845         const struct coda_codec *codec;
 846         struct v4l2_rect r;
 847         int ret;
 848
 849         ret = coda_try_fmt_vid_cap(file, priv, f);
 850         if (ret)
 851                 return ret;
 852
 853         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 854         r.left = 0;
 855         r.top = 0;
 856         r.width = q_data_src->width;
 857         r.height = q_data_src->height;
 858
 859         ret = coda_s_fmt(ctx, f, &r);
 860         if (ret)
 861                 return ret;
 862
 863         if (ctx->inst_type != CODA_INST_ENCODER)
 864                 return 0;
 865
 866         /* Setting the coded format determines the selected codec */
 867         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 868                                 f->fmt.pix.pixelformat);
 869         if (!codec) {
 870                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 871                 return -EINVAL;
 872         }
 873         ctx->codec = codec;
 874
 875         ctx->colorspace = f->fmt.pix.colorspace;
 876         ctx->xfer_func = f->fmt.pix.xfer_func;
 877         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 878         ctx->quantization = f->fmt.pix.quantization;
 879
 880         return 0;
 881 }
 882
 883 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 884                               struct v4l2_format *f)
 885 {
 886         struct coda_ctx *ctx = fh_to_ctx(priv);
 887         const struct coda_codec *codec;
 888         struct v4l2_format f_cap;
 889         struct vb2_queue *dst_vq;
 890         int ret;
 891
 892         ret = coda_try_fmt_vid_out(file, priv, f);
 893         if (ret)
 894                 return ret;
 895
 896         ret = coda_s_fmt(ctx, f, NULL);
 897         if (ret)
 898                 return ret;
 899
 900         ctx->colorspace = f->fmt.pix.colorspace;
 901         ctx->xfer_func = f->fmt.pix.xfer_func;
 902         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 903         ctx->quantization = f->fmt.pix.quantization;
 904
 905         if (ctx->inst_type != CODA_INST_DECODER)
 906                 return 0;
 907
 908         /* Setting the coded format determines the selected codec */
 909         codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
 910                                 V4L2_PIX_FMT_YUV420);
 911         if (!codec) {
 912                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 913                 return -EINVAL;
 914         }
 915         ctx->codec = codec;
 916
 917         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 918         if (!dst_vq)
 919                 return -EINVAL;
 920
 921         /*
 922          * Setting the capture queue format is not possible while the capture
 923          * queue is still busy. This is not an error, but the user will have to
 924          * make sure themselves that the capture format is set correctly before
 925          * starting the output queue again.
 926          */
 927         if (vb2_is_busy(dst_vq))
 928                 return 0;
 929
 930         memset(&f_cap, 0, sizeof(f_cap));
 931         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 932         coda_g_fmt(file, priv, &f_cap);
 933         f_cap.fmt.pix.width = f->fmt.pix.width;
 934         f_cap.fmt.pix.height = f->fmt.pix.height;
 935
 936         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 937 }
 938
 939 static int coda_reqbufs(struct file *file, void *priv,
 940                         struct v4l2_requestbuffers *rb)
 941 {
 942         struct coda_ctx *ctx = fh_to_ctx(priv);
 943         int ret;
 944
 945         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 946         if (ret)
 947                 return ret;
 948
 949         /*
 950          * Allow to allocate instance specific per-context buffers, such as
 951          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 952          */
 953         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 954                 return ctx->ops->reqbufs(ctx, rb);
 955
 956         return 0;
 957 }
 958
 959 static int coda_qbuf(struct file *file, void *priv,
 960                      struct v4l2_buffer *buf)
 961 {
 962         struct coda_ctx *ctx = fh_to_ctx(priv);
 963
 964         if (ctx->inst_type == CODA_INST_DECODER &&
 965             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 966                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 967
 968         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 969 }
 970
 971 static int coda_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 972 {
 973         struct coda_ctx *ctx = fh_to_ctx(priv);
 974         int ret;
 975
 976         ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
 977
 978         if (ctx->inst_type == CODA_INST_DECODER &&
 979             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 980                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 981
 982         return ret;
 983 }
 984
 985 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
 986                        enum vb2_buffer_state state)
 987 {
 988         const struct v4l2_event eos_event = {
 989                 .type = V4L2_EVENT_EOS
 990         };
 991
 992         if (buf->flags & V4L2_BUF_FLAG_LAST)
 993                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 994
 995         v4l2_m2m_buf_done(buf, state);
 996 }
 997
 998 static int coda_g_selection(struct file *file, void *fh,
 999                             struct v4l2_selection *s)
1000 {
1001         struct coda_ctx *ctx = fh_to_ctx(fh);
1002         struct coda_q_data *q_data;
1003         struct v4l2_rect r, *rsel;
1004
1005         q_data = get_q_data(ctx, s->type);
1006         if (!q_data)
1007                 return -EINVAL;
1008
1009         r.left = 0;
1010         r.top = 0;
1011         r.width = q_data->width;
1012         r.height = q_data->height;
1013         rsel = &q_data->rect;
1014
1015         switch (s->target) {
1016         case V4L2_SEL_TGT_CROP_DEFAULT:
1017         case V4L2_SEL_TGT_CROP_BOUNDS:
1018                 rsel = &r;
1019                 fallthrough;
1020         case V4L2_SEL_TGT_CROP:
1021                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
1022                     ctx->inst_type == CODA_INST_DECODER)
1023                         return -EINVAL;
1024                 break;
1025         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1026         case V4L2_SEL_TGT_COMPOSE_PADDED:
1027                 rsel = &r;
1028                 fallthrough;
1029         case V4L2_SEL_TGT_COMPOSE:
1030         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1031                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1032                     ctx->inst_type == CODA_INST_ENCODER)
1033                         return -EINVAL;
1034                 break;
1035         default:
1036                 return -EINVAL;
1037         }
1038
1039         s->r = *rsel;
1040
1041         return 0;
1042 }
1043
1044 static int coda_s_selection(struct file *file, void *fh,
1045                             struct v4l2_selection *s)
1046 {
1047         struct coda_ctx *ctx = fh_to_ctx(fh);
1048         struct coda_q_data *q_data;
1049
1050         switch (s->target) {
1051         case V4L2_SEL_TGT_CROP:
1052                 if (ctx->inst_type == CODA_INST_ENCODER &&
1053                     s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1054                         q_data = get_q_data(ctx, s->type);
1055                         if (!q_data)
1056                                 return -EINVAL;
1057
1058                         s->r.left = 0;
1059                         s->r.top = 0;
1060                         s->r.width = clamp(s->r.width, 2U, q_data->width);
1061                         s->r.height = clamp(s->r.height, 2U, q_data->height);
1062
1063                         if (s->flags & V4L2_SEL_FLAG_LE) {
1064                                 s->r.width = round_up(s->r.width, 2);
1065                                 s->r.height = round_up(s->r.height, 2);
1066                         } else {
1067                                 s->r.width = round_down(s->r.width, 2);
1068                                 s->r.height = round_down(s->r.height, 2);
1069                         }
1070
1071                         q_data->rect = s->r;
1072
1073                         coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
1074                                  s->r.width, s->r.height);
1075
1076                         return 0;
1077                 }
1078                 fallthrough;
1079         case V4L2_SEL_TGT_NATIVE_SIZE:
1080         case V4L2_SEL_TGT_COMPOSE:
1081                 return coda_g_selection(file, fh, s);
1082         default:
1083                 /* v4l2-compliance expects this to fail for read-only targets */
1084                 return -EINVAL;
1085         }
1086 }
1087
1088 static int coda_try_encoder_cmd(struct file *file, void *fh,
1089                                 struct v4l2_encoder_cmd *ec)
1090 {
1091         struct coda_ctx *ctx = fh_to_ctx(fh);
1092
1093         if (ctx->inst_type != CODA_INST_ENCODER)
1094                 return -ENOTTY;
1095
1096         return v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1097 }
1098
1099 static void coda_wake_up_capture_queue(struct coda_ctx *ctx)
1100 {
1101         struct vb2_queue *dst_vq;
1102
1103         coda_dbg(1, ctx, "waking up capture queue\n");
1104
1105         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1106         dst_vq->last_buffer_dequeued = true;
1107         wake_up(&dst_vq->done_wq);
1108 }
1109
1110 static int coda_encoder_cmd(struct file *file, void *fh,
1111                             struct v4l2_encoder_cmd *ec)
1112 {
1113         struct coda_ctx *ctx = fh_to_ctx(fh);
1114         struct vb2_v4l2_buffer *buf;
1115         int ret;
1116
1117         ret = coda_try_encoder_cmd(file, fh, ec);
1118         if (ret < 0)
1119                 return ret;
1120
1121         mutex_lock(&ctx->wakeup_mutex);
1122         buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1123         if (buf) {
1124                 /*
1125                  * If the last output buffer is still on the queue, make sure
1126                  * that decoder finish_run will see the last flag and report it
1127                  * to userspace.
1128                  */
1129                 buf->flags |= V4L2_BUF_FLAG_LAST;
1130         } else {
1131                 /* Set the stream-end flag on this context */
1132                 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1133
1134                 /*
1135                  * If the last output buffer has already been taken from the
1136                  * queue, wake up the capture queue and signal end of stream
1137                  * via the -EPIPE mechanism.
1138                  */
1139                 coda_wake_up_capture_queue(ctx);
1140         }
1141         mutex_unlock(&ctx->wakeup_mutex);
1142
1143         return 0;
1144 }
1145
1146 static int coda_try_decoder_cmd(struct file *file, void *fh,
1147                                 struct v4l2_decoder_cmd *dc)
1148 {
1149         struct coda_ctx *ctx = fh_to_ctx(fh);
1150
1151         if (ctx->inst_type != CODA_INST_DECODER)
1152                 return -ENOTTY;
1153
1154         return v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
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 = coda_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 (ctx->inst_type != CODA_INST_ENCODER)
1289                 return -ENOTTY;
1290
1291         if (fsize->index)
1292                 return -EINVAL;
1293
1294         if (coda_format_normalize_yuv(fsize->pixel_format) ==
1295             V4L2_PIX_FMT_YUV420) {
1296                 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1297                 codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1298                                         q_data_dst->fourcc);
1299         } else {
1300                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1301                                         fsize->pixel_format);
1302         }
1303         if (!codec)
1304                 return -EINVAL;
1305
1306         fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1307         fsize->stepwise.min_width = MIN_W;
1308         fsize->stepwise.max_width = codec->max_w;
1309         fsize->stepwise.step_width = 1;
1310         fsize->stepwise.min_height = MIN_H;
1311         fsize->stepwise.max_height = codec->max_h;
1312         fsize->stepwise.step_height = 1;
1313
1314         return 0;
1315 }
1316
1317 static int coda_enum_frameintervals(struct file *file, void *fh,
1318                                     struct v4l2_frmivalenum *f)
1319 {
1320         struct coda_ctx *ctx = fh_to_ctx(fh);
1321         struct coda_q_data *q_data;
1322         const struct coda_codec *codec;
1323
1324         if (f->index)
1325                 return -EINVAL;
1326
1327         /* Disallow YUYV if the vdoa is not available */
1328         if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1329                 return -EINVAL;
1330
1331         if (coda_format_normalize_yuv(f->pixel_format) == V4L2_PIX_FMT_YUV420) {
1332                 q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1333                 codec = coda_find_codec(ctx->dev, f->pixel_format,
1334                                         q_data->fourcc);
1335         } else {
1336                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1337                                         f->pixel_format);
1338         }
1339         if (!codec)
1340                 return -EINVAL;
1341
1342         if (f->width < MIN_W || f->width > codec->max_w ||
1343             f->height < MIN_H || f->height > codec->max_h)
1344                 return -EINVAL;
1345
1346         f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1347         f->stepwise.min.numerator = 1;
1348         f->stepwise.min.denominator = 65535;
1349         f->stepwise.max.numerator = 65536;
1350         f->stepwise.max.denominator = 1;
1351         f->stepwise.step.numerator = 1;
1352         f->stepwise.step.denominator = 1;
1353
1354         return 0;
1355 }
1356
1357 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1358 {
1359         struct coda_ctx *ctx = fh_to_ctx(fh);
1360         struct v4l2_fract *tpf;
1361
1362         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1363                 return -EINVAL;
1364
1365         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1366         tpf = &a->parm.output.timeperframe;
1367         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1368         tpf->numerator = 1 + (ctx->params.framerate >>
1369                               CODA_FRATE_DIV_OFFSET);
1370
1371         return 0;
1372 }
1373
1374 /*
1375  * Approximate timeperframe v4l2_fract with values that can be written
1376  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1377  */
1378 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1379 {
1380         struct v4l2_fract s = *timeperframe;
1381         struct v4l2_fract f0;
1382         struct v4l2_fract f1 = { 1, 0 };
1383         struct v4l2_fract f2 = { 0, 1 };
1384         unsigned int i, div, s_denominator;
1385
1386         /* Lower bound is 1/65535 */
1387         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1388                 timeperframe->numerator = 1;
1389                 timeperframe->denominator = 65535;
1390                 return;
1391         }
1392
1393         /* Upper bound is 65536/1 */
1394         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1395                 timeperframe->numerator = 65536;
1396                 timeperframe->denominator = 1;
1397                 return;
1398         }
1399
1400         /* Reduce fraction to lowest terms */
1401         div = gcd(s.numerator, s.denominator);
1402         if (div > 1) {
1403                 s.numerator /= div;
1404                 s.denominator /= div;
1405         }
1406
1407         if (s.numerator <= 65536 && s.denominator < 65536) {
1408                 *timeperframe = s;
1409                 return;
1410         }
1411
1412         /* Find successive convergents from continued fraction expansion */
1413         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1414                 f0 = f1;
1415                 f1 = f2;
1416
1417                 /* Stop when f2 exactly equals timeperframe */
1418                 if (s.numerator == 0)
1419                         break;
1420
1421                 i = s.denominator / s.numerator;
1422
1423                 f2.numerator = f0.numerator + i * f1.numerator;
1424                 f2.denominator = f0.denominator + i * f2.denominator;
1425
1426                 s_denominator = s.numerator;
1427                 s.numerator = s.denominator % s.numerator;
1428                 s.denominator = s_denominator;
1429         }
1430
1431         *timeperframe = f1;
1432 }
1433
1434 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1435 {
1436         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1437                 timeperframe->denominator;
1438 }
1439
1440 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1441 {
1442         struct coda_ctx *ctx = fh_to_ctx(fh);
1443         struct v4l2_fract *tpf;
1444
1445         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1446                 return -EINVAL;
1447
1448         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1449         tpf = &a->parm.output.timeperframe;
1450         coda_approximate_timeperframe(tpf);
1451         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1452         ctx->params.framerate_changed = true;
1453
1454         return 0;
1455 }
1456
1457 static int coda_subscribe_event(struct v4l2_fh *fh,
1458                                 const struct v4l2_event_subscription *sub)
1459 {
1460         struct coda_ctx *ctx = fh_to_ctx(fh);
1461
1462         switch (sub->type) {
1463         case V4L2_EVENT_EOS:
1464                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1465         case V4L2_EVENT_SOURCE_CHANGE:
1466                 if (ctx->inst_type == CODA_INST_DECODER)
1467                         return v4l2_event_subscribe(fh, sub, 0, NULL);
1468                 else
1469                         return -EINVAL;
1470         default:
1471                 return v4l2_ctrl_subscribe_event(fh, sub);
1472         }
1473 }
1474
1475 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1476         .vidioc_querycap        = coda_querycap,
1477
1478         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1479         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1480         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1481         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1482
1483         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1484         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1485         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1486         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1487
1488         .vidioc_reqbufs         = coda_reqbufs,
1489         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1490
1491         .vidioc_qbuf            = coda_qbuf,
1492         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1493         .vidioc_dqbuf           = coda_dqbuf,
1494         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1495         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1496
1497         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1498         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1499
1500         .vidioc_g_selection     = coda_g_selection,
1501         .vidioc_s_selection     = coda_s_selection,
1502
1503         .vidioc_try_encoder_cmd = coda_try_encoder_cmd,
1504         .vidioc_encoder_cmd     = coda_encoder_cmd,
1505         .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
1506         .vidioc_decoder_cmd     = coda_decoder_cmd,
1507
1508         .vidioc_g_parm          = coda_g_parm,
1509         .vidioc_s_parm          = coda_s_parm,
1510
1511         .vidioc_enum_framesizes = coda_enum_framesizes,
1512         .vidioc_enum_frameintervals = coda_enum_frameintervals,
1513
1514         .vidioc_subscribe_event = coda_subscribe_event,
1515         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1516 };
1517
1518 /*
1519  * Mem-to-mem operations.
1520  */
1521
1522 static void coda_device_run(void *m2m_priv)
1523 {
1524         struct coda_ctx *ctx = m2m_priv;
1525         struct coda_dev *dev = ctx->dev;
1526
1527         queue_work(dev->workqueue, &ctx->pic_run_work);
1528 }
1529
1530 static void coda_pic_run_work(struct work_struct *work)
1531 {
1532         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1533         struct coda_dev *dev = ctx->dev;
1534         int ret;
1535
1536         mutex_lock(&ctx->buffer_mutex);
1537         mutex_lock(&dev->coda_mutex);
1538
1539         ret = ctx->ops->prepare_run(ctx);
1540         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
1541                 mutex_unlock(&dev->coda_mutex);
1542                 mutex_unlock(&ctx->buffer_mutex);
1543                 /* job_finish scheduled by prepare_decode */
1544                 return;
1545         }
1546
1547         if (!wait_for_completion_timeout(&ctx->completion,
1548                                          msecs_to_jiffies(1000))) {
1549                 if (ctx->use_bit) {
1550                         dev_err(dev->dev, "CODA PIC_RUN timeout\n");
1551
1552                         ctx->hold = true;
1553
1554                         coda_hw_reset(ctx);
1555                 }
1556
1557                 if (ctx->ops->run_timeout)
1558                         ctx->ops->run_timeout(ctx);
1559         } else {
1560                 ctx->ops->finish_run(ctx);
1561         }
1562
1563         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1564             ctx->ops->seq_end_work)
1565                 queue_work(dev->workqueue, &ctx->seq_end_work);
1566
1567         mutex_unlock(&dev->coda_mutex);
1568         mutex_unlock(&ctx->buffer_mutex);
1569
1570         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1571 }
1572
1573 static int coda_job_ready(void *m2m_priv)
1574 {
1575         struct coda_ctx *ctx = m2m_priv;
1576         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1577
1578         /*
1579          * For both 'P' and 'key' frame cases 1 picture
1580          * and 1 frame are needed. In the decoder case,
1581          * the compressed frame can be in the bitstream.
1582          */
1583         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1584                 coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1585                 return 0;
1586         }
1587
1588         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1589                 coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1590                 return 0;
1591         }
1592
1593         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1594                 bool stream_end = ctx->bit_stream_param &
1595                                   CODA_BIT_STREAM_END_FLAG;
1596                 int num_metas = ctx->num_metas;
1597                 struct coda_buffer_meta *meta;
1598                 unsigned int count;
1599
1600                 count = hweight32(ctx->frm_dis_flg);
1601                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1602                         coda_dbg(1, ctx,
1603                                  "not ready: all internal buffers in use: %d/%d (0x%x)",
1604                                  count, ctx->num_internal_frames,
1605                                  ctx->frm_dis_flg);
1606                         return 0;
1607                 }
1608
1609                 if (ctx->hold && !src_bufs) {
1610                         coda_dbg(1, ctx,
1611                                  "not ready: on hold for more buffers.\n");
1612                         return 0;
1613                 }
1614
1615                 if (!stream_end && (num_metas + src_bufs) < 2) {
1616                         coda_dbg(1, ctx,
1617                                  "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1618                                  num_metas, src_bufs);
1619                         return 0;
1620                 }
1621
1622                 meta = list_first_entry(&ctx->buffer_meta_list,
1623                                         struct coda_buffer_meta, list);
1624                 if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1625                     !stream_end) {
1626                         coda_dbg(1, ctx,
1627                                  "not ready: not enough bitstream data to read past %u (%u)\n",
1628                                  meta->end, ctx->bitstream_fifo.kfifo.in);
1629                         return 0;
1630                 }
1631         }
1632
1633         if (ctx->aborting) {
1634                 coda_dbg(1, ctx, "not ready: aborting\n");
1635                 return 0;
1636         }
1637
1638         coda_dbg(2, ctx, "job ready\n");
1639
1640         return 1;
1641 }
1642
1643 static void coda_job_abort(void *priv)
1644 {
1645         struct coda_ctx *ctx = priv;
1646
1647         ctx->aborting = 1;
1648
1649         coda_dbg(1, ctx, "job abort\n");
1650 }
1651
1652 static const struct v4l2_m2m_ops coda_m2m_ops = {
1653         .device_run     = coda_device_run,
1654         .job_ready      = coda_job_ready,
1655         .job_abort      = coda_job_abort,
1656 };
1657
1658 static void set_default_params(struct coda_ctx *ctx)
1659 {
1660         unsigned int max_w, max_h, usize, csize;
1661
1662         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1663                                      ctx->cvd->dst_formats[0]);
1664         max_w = min(ctx->codec->max_w, 1920U);
1665         max_h = min(ctx->codec->max_h, 1088U);
1666         usize = max_w * max_h * 3 / 2;
1667         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1668
1669         ctx->params.codec_mode = ctx->codec->mode;
1670         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1671                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1672         else
1673                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1674         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1675         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1676         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1677         ctx->params.framerate = 30;
1678
1679         /* Default formats for output and input queues */
1680         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1681         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1682         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1683         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1684         ctx->q_data[V4L2_M2M_DST].width = max_w;
1685         ctx->q_data[V4L2_M2M_DST].height = max_h;
1686         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1687                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1688                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1689                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1690                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1691         } else {
1692                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1693                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1694                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1695                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1696         }
1697         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1698         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1699         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1700         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1701
1702         /*
1703          * Since the RBC2AXI logic only supports a single chroma plane,
1704          * macroblock tiling only works for to NV12 pixel format.
1705          */
1706         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1707 }
1708
1709 /*
1710  * Queue operations
1711  */
1712 static int coda_queue_setup(struct vb2_queue *vq,
1713                                 unsigned int *nbuffers, unsigned int *nplanes,
1714                                 unsigned int sizes[], struct device *alloc_devs[])
1715 {
1716         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1717         struct coda_q_data *q_data;
1718         unsigned int size;
1719
1720         q_data = get_q_data(ctx, vq->type);
1721         size = q_data->sizeimage;
1722
1723         if (*nplanes)
1724                 return sizes[0] < size ? -EINVAL : 0;
1725
1726         *nplanes = 1;
1727         sizes[0] = size;
1728
1729         coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1730                  size);
1731
1732         return 0;
1733 }
1734
1735 static int coda_buf_prepare(struct vb2_buffer *vb)
1736 {
1737         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1738         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1739         struct coda_q_data *q_data;
1740
1741         q_data = get_q_data(ctx, vb->vb2_queue->type);
1742         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1743                 if (vbuf->field == V4L2_FIELD_ANY)
1744                         vbuf->field = V4L2_FIELD_NONE;
1745                 if (vbuf->field != V4L2_FIELD_NONE) {
1746                         v4l2_warn(&ctx->dev->v4l2_dev,
1747                                   "%s field isn't supported\n", __func__);
1748                         return -EINVAL;
1749                 }
1750         }
1751
1752         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1753                 v4l2_warn(&ctx->dev->v4l2_dev,
1754                           "%s data will not fit into plane (%lu < %lu)\n",
1755                           __func__, vb2_plane_size(vb, 0),
1756                           (long)q_data->sizeimage);
1757                 return -EINVAL;
1758         }
1759
1760         return 0;
1761 }
1762
1763 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1764 {
1765         if (!ctrl)
1766                 return;
1767
1768         v4l2_ctrl_lock(ctrl);
1769
1770         /*
1771          * Extend the control range if the parsed stream contains a known but
1772          * unsupported value or level.
1773          */
1774         if (value > ctrl->maximum) {
1775                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1776                         ctrl->menu_skip_mask & ~(1 << value),
1777                         ctrl->default_value);
1778         } else if (value < ctrl->minimum) {
1779                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1780                         ctrl->menu_skip_mask & ~(1 << value),
1781                         ctrl->default_value);
1782         }
1783
1784         __v4l2_ctrl_s_ctrl(ctrl, value);
1785
1786         v4l2_ctrl_unlock(ctrl);
1787 }
1788
1789 void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
1790                                      u8 level_idc)
1791 {
1792         const char * const *profile_names;
1793         const char * const *level_names;
1794         struct v4l2_ctrl *profile_ctrl;
1795         struct v4l2_ctrl *level_ctrl;
1796         const char *codec_name;
1797         u32 profile_cid;
1798         u32 level_cid;
1799         int profile;
1800         int level;
1801
1802         switch (ctx->codec->src_fourcc) {
1803         case V4L2_PIX_FMT_H264:
1804                 codec_name = "H264";
1805                 profile_cid = V4L2_CID_MPEG_VIDEO_H264_PROFILE;
1806                 level_cid = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1807                 profile_ctrl = ctx->h264_profile_ctrl;
1808                 level_ctrl = ctx->h264_level_ctrl;
1809                 profile = coda_h264_profile(profile_idc);
1810                 level = coda_h264_level(level_idc);
1811                 break;
1812         case V4L2_PIX_FMT_MPEG2:
1813                 codec_name = "MPEG-2";
1814                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
1815                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
1816                 profile_ctrl = ctx->mpeg2_profile_ctrl;
1817                 level_ctrl = ctx->mpeg2_level_ctrl;
1818                 profile = coda_mpeg2_profile(profile_idc);
1819                 level = coda_mpeg2_level(level_idc);
1820                 break;
1821         case V4L2_PIX_FMT_MPEG4:
1822                 codec_name = "MPEG-4";
1823                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
1824                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
1825                 profile_ctrl = ctx->mpeg4_profile_ctrl;
1826                 level_ctrl = ctx->mpeg4_level_ctrl;
1827                 profile = coda_mpeg4_profile(profile_idc);
1828                 level = coda_mpeg4_level(level_idc);
1829                 break;
1830         default:
1831                 return;
1832         }
1833
1834         profile_names = v4l2_ctrl_get_menu(profile_cid);
1835         level_names = v4l2_ctrl_get_menu(level_cid);
1836
1837         if (profile < 0) {
1838                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s profile: %u\n",
1839                           codec_name, profile_idc);
1840         } else {
1841                 coda_dbg(1, ctx, "Parsed %s profile: %s\n", codec_name,
1842                          profile_names[profile]);
1843                 coda_update_menu_ctrl(profile_ctrl, profile);
1844         }
1845
1846         if (level < 0) {
1847                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s level: %u\n",
1848                           codec_name, level_idc);
1849         } else {
1850                 coda_dbg(1, ctx, "Parsed %s level: %s\n", codec_name,
1851                          level_names[level]);
1852                 coda_update_menu_ctrl(level_ctrl, level);
1853         }
1854 }
1855
1856 static void coda_queue_source_change_event(struct coda_ctx *ctx)
1857 {
1858         static const struct v4l2_event source_change_event = {
1859                 .type = V4L2_EVENT_SOURCE_CHANGE,
1860                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1861         };
1862
1863         v4l2_event_queue_fh(&ctx->fh, &source_change_event);
1864 }
1865
1866 static void coda_buf_queue(struct vb2_buffer *vb)
1867 {
1868         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1869         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1870         struct vb2_queue *vq = vb->vb2_queue;
1871         struct coda_q_data *q_data;
1872
1873         q_data = get_q_data(ctx, vb->vb2_queue->type);
1874
1875         /*
1876          * In the decoder case, immediately try to copy the buffer into the
1877          * bitstream ringbuffer and mark it as ready to be dequeued.
1878          */
1879         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1880                 /*
1881                  * For backwards compatibility, queuing an empty buffer marks
1882                  * the stream end
1883                  */
1884                 if (vb2_get_plane_payload(vb, 0) == 0)
1885                         coda_bit_stream_end_flag(ctx);
1886
1887                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1888                         /*
1889                          * Unless already done, try to obtain profile_idc and
1890                          * level_idc from the SPS header. This allows to decide
1891                          * whether to enable reordering during sequence
1892                          * initialization.
1893                          */
1894                         if (!ctx->params.h264_profile_idc) {
1895                                 coda_sps_parse_profile(ctx, vb);
1896                                 coda_update_profile_level_ctrls(ctx,
1897                                                 ctx->params.h264_profile_idc,
1898                                                 ctx->params.h264_level_idc);
1899                         }
1900                 }
1901
1902                 mutex_lock(&ctx->bitstream_mutex);
1903                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1904                 if (vb2_is_streaming(vb->vb2_queue))
1905                         /* This set buf->sequence = ctx->qsequence++ */
1906                         coda_fill_bitstream(ctx, NULL);
1907                 mutex_unlock(&ctx->bitstream_mutex);
1908
1909                 if (!ctx->initialized) {
1910                         /*
1911                          * Run sequence initialization in case the queued
1912                          * buffer contained headers.
1913                          */
1914                         if (vb2_is_streaming(vb->vb2_queue) &&
1915                             ctx->ops->seq_init_work) {
1916                                 queue_work(ctx->dev->workqueue,
1917                                            &ctx->seq_init_work);
1918                                 flush_work(&ctx->seq_init_work);
1919                         }
1920
1921                         if (ctx->initialized)
1922                                 coda_queue_source_change_event(ctx);
1923                 }
1924         } else {
1925                 if ((ctx->inst_type == CODA_INST_ENCODER || !ctx->use_bit) &&
1926                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1927                         vbuf->sequence = ctx->qsequence++;
1928                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1929         }
1930 }
1931
1932 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1933                        size_t size, const char *name, struct dentry *parent)
1934 {
1935         buf->vaddr = dma_alloc_coherent(dev->dev, size, &buf->paddr,
1936                                         GFP_KERNEL);
1937         if (!buf->vaddr) {
1938                 v4l2_err(&dev->v4l2_dev,
1939                          "Failed to allocate %s buffer of size %zu\n",
1940                          name, size);
1941                 return -ENOMEM;
1942         }
1943
1944         buf->size = size;
1945
1946         if (name && parent) {
1947                 buf->blob.data = buf->vaddr;
1948                 buf->blob.size = size;
1949                 buf->dentry = debugfs_create_blob(name, 0444, parent,
1950                                                   &buf->blob);
1951         }
1952
1953         return 0;
1954 }
1955
1956 void coda_free_aux_buf(struct coda_dev *dev,
1957                        struct coda_aux_buf *buf)
1958 {
1959         if (buf->vaddr) {
1960                 dma_free_coherent(dev->dev, buf->size, buf->vaddr, buf->paddr);
1961                 buf->vaddr = NULL;
1962                 buf->size = 0;
1963                 debugfs_remove(buf->dentry);
1964                 buf->dentry = NULL;
1965         }
1966 }
1967
1968 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1969 {
1970         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1971         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1972         struct coda_q_data *q_data_src, *q_data_dst;
1973         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1974         struct vb2_v4l2_buffer *buf;
1975         struct list_head list;
1976         int ret = 0;
1977
1978         if (count < 1)
1979                 return -EINVAL;
1980
1981         coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1982
1983         INIT_LIST_HEAD(&list);
1984
1985         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1986         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1987                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1988                         /* copy the buffers that were queued before streamon */
1989                         mutex_lock(&ctx->bitstream_mutex);
1990                         coda_fill_bitstream(ctx, &list);
1991                         mutex_unlock(&ctx->bitstream_mutex);
1992
1993                         if (ctx->dev->devtype->product != CODA_960 &&
1994                             coda_get_bitstream_payload(ctx) < 512) {
1995                                 v4l2_err(v4l2_dev, "start payload < 512\n");
1996                                 ret = -EINVAL;
1997                                 goto err;
1998                         }
1999
2000                         if (!ctx->initialized) {
2001                                 /* Run sequence initialization */
2002                                 if (ctx->ops->seq_init_work) {
2003                                         queue_work(ctx->dev->workqueue,
2004                                                    &ctx->seq_init_work);
2005                                         flush_work(&ctx->seq_init_work);
2006                                 }
2007                         }
2008                 }
2009
2010                 /*
2011                  * Check the first input JPEG buffer to determine chroma
2012                  * subsampling.
2013                  */
2014                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
2015                         buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2016                         ret = coda_jpeg_decode_header(ctx, &buf->vb2_buf);
2017                         if (ret < 0) {
2018                                 v4l2_err(v4l2_dev,
2019                                          "failed to decode JPEG header: %d\n",
2020                                          ret);
2021                                 goto err;
2022                         }
2023
2024                         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2025                         q_data_dst->width = round_up(q_data_src->width, 16);
2026                         q_data_dst->height = round_up(q_data_src->height, 16);
2027                         q_data_dst->bytesperline = q_data_dst->width;
2028                         if (ctx->params.jpeg_chroma_subsampling ==
2029                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
2030                                 q_data_dst->sizeimage =
2031                                                 q_data_dst->bytesperline *
2032                                                 q_data_dst->height * 3 / 2;
2033                                 if (q_data_dst->fourcc != V4L2_PIX_FMT_YUV420)
2034                                         q_data_dst->fourcc = V4L2_PIX_FMT_NV12;
2035                         } else {
2036                                 q_data_dst->sizeimage =
2037                                                 q_data_dst->bytesperline *
2038                                                 q_data_dst->height * 2;
2039                                 q_data_dst->fourcc = V4L2_PIX_FMT_YUV422P;
2040                         }
2041                         q_data_dst->rect.left = 0;
2042                         q_data_dst->rect.top = 0;
2043                         q_data_dst->rect.width = q_data_src->width;
2044                         q_data_dst->rect.height = q_data_src->height;
2045                 }
2046                 ctx->streamon_out = 1;
2047         } else {
2048                 ctx->streamon_cap = 1;
2049         }
2050
2051         /* Don't start the coda unless both queues are on */
2052         if (!(ctx->streamon_out && ctx->streamon_cap))
2053                 goto out;
2054
2055         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2056         if ((q_data_src->rect.width != q_data_dst->width &&
2057              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
2058             (q_data_src->rect.height != q_data_dst->height &&
2059              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
2060                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
2061                          q_data_src->rect.width, q_data_src->rect.height,
2062                          q_data_dst->width, q_data_dst->height);
2063                 ret = -EINVAL;
2064                 goto err;
2065         }
2066
2067         /* Allow BIT decoder device_run with no new buffers queued */
2068         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2069                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
2070
2071         ctx->gopcounter = ctx->params.gop_size - 1;
2072
2073         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
2074                 ctx->params.gop_size = 1;
2075         ctx->gopcounter = ctx->params.gop_size - 1;
2076         /* Only decoders have this control */
2077         if (ctx->mb_err_cnt_ctrl)
2078                 v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl, 0);
2079
2080         ret = ctx->ops->start_streaming(ctx);
2081         if (ctx->inst_type == CODA_INST_DECODER) {
2082                 if (ret == -EAGAIN)
2083                         goto out;
2084         }
2085         if (ret < 0)
2086                 goto err;
2087
2088 out:
2089         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2090                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2091                         list_del(&m2m_buf->list);
2092                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
2093                 }
2094         }
2095         return 0;
2096
2097 err:
2098         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2099                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2100                         list_del(&m2m_buf->list);
2101                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
2102                 }
2103                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2104                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2105         } else {
2106                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2107                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2108         }
2109         return ret;
2110 }
2111
2112 static void coda_stop_streaming(struct vb2_queue *q)
2113 {
2114         struct coda_ctx *ctx = vb2_get_drv_priv(q);
2115         struct coda_dev *dev = ctx->dev;
2116         struct vb2_v4l2_buffer *buf;
2117         bool stop;
2118
2119         stop = ctx->streamon_out && ctx->streamon_cap;
2120
2121         coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
2122
2123         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2124                 ctx->streamon_out = 0;
2125
2126                 coda_bit_stream_end_flag(ctx);
2127
2128                 ctx->qsequence = 0;
2129
2130                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2131                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2132         } else {
2133                 ctx->streamon_cap = 0;
2134
2135                 ctx->osequence = 0;
2136                 ctx->sequence_offset = 0;
2137
2138                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2139                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2140         }
2141
2142         if (stop) {
2143                 struct coda_buffer_meta *meta;
2144
2145                 if (ctx->ops->seq_end_work) {
2146                         queue_work(dev->workqueue, &ctx->seq_end_work);
2147                         flush_work(&ctx->seq_end_work);
2148                 }
2149                 spin_lock(&ctx->buffer_meta_lock);
2150                 while (!list_empty(&ctx->buffer_meta_list)) {
2151                         meta = list_first_entry(&ctx->buffer_meta_list,
2152                                                 struct coda_buffer_meta, list);
2153                         list_del(&meta->list);
2154                         kfree(meta);
2155                 }
2156                 ctx->num_metas = 0;
2157                 spin_unlock(&ctx->buffer_meta_lock);
2158                 kfifo_init(&ctx->bitstream_fifo,
2159                         ctx->bitstream.vaddr, ctx->bitstream.size);
2160                 ctx->runcounter = 0;
2161                 ctx->aborting = 0;
2162                 ctx->hold = false;
2163         }
2164
2165         if (!ctx->streamon_out && !ctx->streamon_cap)
2166                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
2167 }
2168
2169 static const struct vb2_ops coda_qops = {
2170         .queue_setup            = coda_queue_setup,
2171         .buf_prepare            = coda_buf_prepare,
2172         .buf_queue              = coda_buf_queue,
2173         .start_streaming        = coda_start_streaming,
2174         .stop_streaming         = coda_stop_streaming,
2175         .wait_prepare           = vb2_ops_wait_prepare,
2176         .wait_finish            = vb2_ops_wait_finish,
2177 };
2178
2179 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2180 {
2181         const char * const *val_names = v4l2_ctrl_get_menu(ctrl->id);
2182         struct coda_ctx *ctx =
2183                         container_of(ctrl->handler, struct coda_ctx, ctrls);
2184
2185         if (val_names)
2186                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d (\"%s\")\n",
2187                          ctrl->id, ctrl->name, ctrl->val, val_names[ctrl->val]);
2188         else
2189                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
2190                          ctrl->id, ctrl->name, ctrl->val);
2191
2192         switch (ctrl->id) {
2193         case V4L2_CID_HFLIP:
2194                 if (ctrl->val)
2195                         ctx->params.rot_mode |= CODA_MIR_HOR;
2196                 else
2197                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
2198                 break;
2199         case V4L2_CID_VFLIP:
2200                 if (ctrl->val)
2201                         ctx->params.rot_mode |= CODA_MIR_VER;
2202                 else
2203                         ctx->params.rot_mode &= ~CODA_MIR_VER;
2204                 break;
2205         case V4L2_CID_MPEG_VIDEO_BITRATE:
2206                 ctx->params.bitrate = ctrl->val / 1000;
2207                 ctx->params.bitrate_changed = true;
2208                 break;
2209         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2210                 ctx->params.gop_size = ctrl->val;
2211                 break;
2212         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2213                 ctx->params.h264_intra_qp = ctrl->val;
2214                 ctx->params.h264_intra_qp_changed = true;
2215                 break;
2216         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2217                 ctx->params.h264_inter_qp = ctrl->val;
2218                 break;
2219         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
2220                 ctx->params.h264_min_qp = ctrl->val;
2221                 break;
2222         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
2223                 ctx->params.h264_max_qp = ctrl->val;
2224                 break;
2225         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
2226                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
2227                 break;
2228         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
2229                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
2230                 break;
2231         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
2232                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
2233                 break;
2234         case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
2235                 ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
2236                 break;
2237         case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
2238                 ctx->params.frame_rc_enable = ctrl->val;
2239                 break;
2240         case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
2241                 ctx->params.mb_rc_enable = ctrl->val;
2242                 break;
2243         case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
2244                 ctx->params.h264_chroma_qp_index_offset = ctrl->val;
2245                 break;
2246         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
2247                 /* TODO: switch between baseline and constrained baseline */
2248                 if (ctx->inst_type == CODA_INST_ENCODER)
2249                         ctx->params.h264_profile_idc = 66;
2250                 break;
2251         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
2252                 /* nothing to do, this is set by the encoder */
2253                 break;
2254         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2255                 ctx->params.mpeg4_intra_qp = ctrl->val;
2256                 break;
2257         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2258                 ctx->params.mpeg4_inter_qp = ctrl->val;
2259                 break;
2260         case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
2261         case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
2262         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
2263         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
2264                 /* nothing to do, these are fixed */
2265                 break;
2266         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2267                 ctx->params.slice_mode = ctrl->val;
2268                 ctx->params.slice_mode_changed = true;
2269                 break;
2270         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2271                 ctx->params.slice_max_mb = ctrl->val;
2272                 ctx->params.slice_mode_changed = true;
2273                 break;
2274         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2275                 ctx->params.slice_max_bits = ctrl->val * 8;
2276                 ctx->params.slice_mode_changed = true;
2277                 break;
2278         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2279                 break;
2280         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
2281                 ctx->params.intra_refresh = ctrl->val;
2282                 ctx->params.intra_refresh_changed = true;
2283                 break;
2284         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
2285                 ctx->params.force_ipicture = true;
2286                 break;
2287         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
2288                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
2289                 break;
2290         case V4L2_CID_JPEG_RESTART_INTERVAL:
2291                 ctx->params.jpeg_restart_interval = ctrl->val;
2292                 break;
2293         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
2294                 ctx->params.vbv_delay = ctrl->val;
2295                 break;
2296         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
2297                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
2298                 break;
2299         default:
2300                 coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
2301                          ctrl->id, ctrl->val);
2302                 return -EINVAL;
2303         }
2304
2305         return 0;
2306 }
2307
2308 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
2309         .s_ctrl = coda_s_ctrl,
2310 };
2311
2312 static void coda_encode_ctrls(struct coda_ctx *ctx)
2313 {
2314         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
2315
2316         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2317                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
2318         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2319                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
2320         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2321                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
2322         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2323                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
2324         if (ctx->dev->devtype->product != CODA_960) {
2325                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2326                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
2327         }
2328         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2329                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
2330         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2331                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
2332         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2333                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
2334         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2335                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
2336                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
2337                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
2338         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2339                 V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
2340                 0);
2341         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2342                 V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);
2343         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2344                 V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE, 0, 1, 1, 1);
2345         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2346                 V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
2347         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2348                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2349                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE, 0x0,
2350                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
2351         if (ctx->dev->devtype->product == CODA_HX4 ||
2352             ctx->dev->devtype->product == CODA_7541) {
2353                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2354                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2355                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2356                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2357                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2358                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2359                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2360         }
2361         if (ctx->dev->devtype->product == CODA_960) {
2362                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2363                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2364                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
2365                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2366                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2367                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2368                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2369                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
2370                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
2371         }
2372         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2373                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2374         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2375                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2376         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2377                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2378                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
2379                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
2380         if (ctx->dev->devtype->product == CODA_HX4 ||
2381             ctx->dev->devtype->product == CODA_7541 ||
2382             ctx->dev->devtype->product == CODA_960) {
2383                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2384                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2385                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
2386                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
2387                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2388         }
2389         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2390                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2391                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES, 0x0,
2392                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2393         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2394                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2395         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2396                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
2397                 500);
2398         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2399                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2400                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2401                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2402                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2403         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2404                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
2405                 1920 * 1088 / 256, 1, 0);
2406         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2407                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
2408         /*
2409          * The maximum VBV size value is 0x7fffffff bits,
2410          * one bit less than 262144 KiB
2411          */
2412         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2413                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
2414 }
2415
2416 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
2417 {
2418         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2419                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
2420         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2421                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
2422 }
2423
2424 static void coda_decode_ctrls(struct coda_ctx *ctx)
2425 {
2426         u8 max;
2427
2428         ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2429                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2430                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
2431                 ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE) |
2432                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
2433                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
2434                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
2435         if (ctx->h264_profile_ctrl)
2436                 ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2437
2438         if (ctx->dev->devtype->product == CODA_HX4 ||
2439             ctx->dev->devtype->product == CODA_7541)
2440                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
2441         else if (ctx->dev->devtype->product == CODA_960)
2442                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
2443         else
2444                 return;
2445         ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2446                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, 0, max);
2447         if (ctx->h264_level_ctrl)
2448                 ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2449
2450         ctx->mpeg2_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2451                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE,
2452                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH, 0,
2453                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH);
2454         if (ctx->mpeg2_profile_ctrl)
2455                 ctx->mpeg2_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2456
2457         ctx->mpeg2_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2458                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL,
2459                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH, 0,
2460                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH);
2461         if (ctx->mpeg2_level_ctrl)
2462                 ctx->mpeg2_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2463
2464         ctx->mpeg4_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2465                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2466                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY, 0,
2467                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY);
2468         if (ctx->mpeg4_profile_ctrl)
2469                 ctx->mpeg4_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2470
2471         ctx->mpeg4_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2472                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2473                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5, 0,
2474                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2475         if (ctx->mpeg4_level_ctrl)
2476                 ctx->mpeg4_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2477 }
2478
2479 static const struct v4l2_ctrl_config coda_mb_err_cnt_ctrl_config = {
2480         .id     = V4L2_CID_CODA_MB_ERR_CNT,
2481         .name   = "Macroblocks Error Count",
2482         .type   = V4L2_CTRL_TYPE_INTEGER,
2483         .min    = 0,
2484         .max    = 0x7fffffff,
2485         .step   = 1,
2486 };
2487
2488 static int coda_ctrls_setup(struct coda_ctx *ctx)
2489 {
2490         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2491
2492         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2493                 V4L2_CID_HFLIP, 0, 1, 1, 0);
2494         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2495                 V4L2_CID_VFLIP, 0, 1, 1, 0);
2496         if (ctx->inst_type == CODA_INST_ENCODER) {
2497                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2498                                   V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
2499                                   1, 1, 1, 1);
2500                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2501                         coda_jpeg_encode_ctrls(ctx);
2502                 else
2503                         coda_encode_ctrls(ctx);
2504         } else {
2505                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2506                                   V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
2507                                   1, 1, 1, 1);
2508                 if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2509                         coda_decode_ctrls(ctx);
2510
2511                 ctx->mb_err_cnt_ctrl = v4l2_ctrl_new_custom(&ctx->ctrls,
2512                                                 &coda_mb_err_cnt_ctrl_config,
2513                                                 NULL);
2514                 if (ctx->mb_err_cnt_ctrl)
2515                         ctx->mb_err_cnt_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2516         }
2517
2518         if (ctx->ctrls.error) {
2519                 v4l2_err(&ctx->dev->v4l2_dev,
2520                         "control initialization error (%d)",
2521                         ctx->ctrls.error);
2522                 return -EINVAL;
2523         }
2524
2525         return v4l2_ctrl_handler_setup(&ctx->ctrls);
2526 }
2527
2528 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2529 {
2530         vq->drv_priv = ctx;
2531         vq->ops = &coda_qops;
2532         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2533         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2534         vq->lock = &ctx->dev->dev_mutex;
2535         /* One way to indicate end-of-stream for coda is to set the
2536          * bytesused == 0. However by default videobuf2 handles bytesused
2537          * equal to 0 as a special case and changes its value to the size
2538          * of the buffer. Set the allow_zero_bytesused flag, so
2539          * that videobuf2 will keep the value of bytesused intact.
2540          */
2541         vq->allow_zero_bytesused = 1;
2542         /*
2543          * We might be fine with no buffers on some of the queues, but that
2544          * would need to be reflected in job_ready(). Currently we expect all
2545          * queues to have at least one buffer queued.
2546          */
2547         vq->min_buffers_needed = 1;
2548         vq->dev = ctx->dev->dev;
2549
2550         return vb2_queue_init(vq);
2551 }
2552
2553 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2554                             struct vb2_queue *dst_vq)
2555 {
2556         int ret;
2557
2558         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2559         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2560         src_vq->mem_ops = &vb2_dma_contig_memops;
2561
2562         ret = coda_queue_init(priv, src_vq);
2563         if (ret)
2564                 return ret;
2565
2566         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2567         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2568         dst_vq->mem_ops = &vb2_dma_contig_memops;
2569
2570         return coda_queue_init(priv, dst_vq);
2571 }
2572
2573 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2574                             struct vb2_queue *dst_vq)
2575 {
2576         int ret;
2577
2578         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2579         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2580         src_vq->mem_ops = &vb2_vmalloc_memops;
2581
2582         ret = coda_queue_init(priv, src_vq);
2583         if (ret)
2584                 return ret;
2585
2586         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2587         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2588         dst_vq->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING;
2589         dst_vq->mem_ops = &vb2_dma_contig_memops;
2590
2591         return coda_queue_init(priv, dst_vq);
2592 }
2593
2594 /*
2595  * File operations
2596  */
2597
2598 static int coda_open(struct file *file)
2599 {
2600         struct video_device *vdev = video_devdata(file);
2601         struct coda_dev *dev = video_get_drvdata(vdev);
2602         struct coda_ctx *ctx;
2603         unsigned int max = ~0;
2604         char *name;
2605         int ret;
2606         int idx;
2607
2608         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2609         if (!ctx)
2610                 return -ENOMEM;
2611
2612         if (dev->devtype->product == CODA_DX6)
2613                 max = CODADX6_MAX_INSTANCES - 1;
2614         idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2615         if (idx < 0) {
2616                 ret = idx;
2617                 goto err_coda_max;
2618         }
2619
2620         name = kasprintf(GFP_KERNEL, "context%d", idx);
2621         if (!name) {
2622                 ret = -ENOMEM;
2623                 goto err_coda_name_init;
2624         }
2625
2626         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2627         kfree(name);
2628
2629         ctx->cvd = to_coda_video_device(vdev);
2630         ctx->inst_type = ctx->cvd->type;
2631         ctx->ops = ctx->cvd->ops;
2632         ctx->use_bit = !ctx->cvd->direct;
2633         init_completion(&ctx->completion);
2634         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2635         if (ctx->ops->seq_init_work)
2636                 INIT_WORK(&ctx->seq_init_work, ctx->ops->seq_init_work);
2637         if (ctx->ops->seq_end_work)
2638                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2639         v4l2_fh_init(&ctx->fh, video_devdata(file));
2640         file->private_data = &ctx->fh;
2641         v4l2_fh_add(&ctx->fh);
2642         ctx->dev = dev;
2643         ctx->idx = idx;
2644
2645         coda_dbg(1, ctx, "open instance (%p)\n", ctx);
2646
2647         switch (dev->devtype->product) {
2648         case CODA_960:
2649                 /*
2650                  * Enabling the BWB when decoding can hang the firmware with
2651                  * certain streams. The issue was tracked as ENGR00293425 by
2652                  * Freescale. As a workaround, disable BWB for all decoders.
2653                  * The enable_bwb module parameter allows to override this.
2654                  */
2655                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2656                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2657                 fallthrough;
2658         case CODA_HX4:
2659         case CODA_7541:
2660                 ctx->reg_idx = 0;
2661                 break;
2662         default:
2663                 ctx->reg_idx = idx;
2664         }
2665         if (ctx->dev->vdoa && !disable_vdoa) {
2666                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2667                 if (!ctx->vdoa)
2668                         v4l2_warn(&dev->v4l2_dev,
2669                                   "Failed to create vdoa context: not using vdoa");
2670         }
2671         ctx->use_vdoa = false;
2672
2673         /* Power up and upload firmware if necessary */
2674         ret = pm_runtime_resume_and_get(dev->dev);
2675         if (ret < 0) {
2676                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2677                 goto err_pm_get;
2678         }
2679
2680         ret = clk_prepare_enable(dev->clk_per);
2681         if (ret)
2682                 goto err_clk_enable;
2683
2684         ret = clk_prepare_enable(dev->clk_ahb);
2685         if (ret)
2686                 goto err_clk_ahb;
2687
2688         set_default_params(ctx);
2689         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2690                                             ctx->ops->queue_init);
2691         if (IS_ERR(ctx->fh.m2m_ctx)) {
2692                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2693
2694                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2695                          __func__, ret);
2696                 goto err_ctx_init;
2697         }
2698
2699         ret = coda_ctrls_setup(ctx);
2700         if (ret) {
2701                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2702                 goto err_ctrls_setup;
2703         }
2704
2705         ctx->fh.ctrl_handler = &ctx->ctrls;
2706
2707         mutex_init(&ctx->bitstream_mutex);
2708         mutex_init(&ctx->buffer_mutex);
2709         mutex_init(&ctx->wakeup_mutex);
2710         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2711         spin_lock_init(&ctx->buffer_meta_lock);
2712
2713         return 0;
2714
2715 err_ctrls_setup:
2716         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2717 err_ctx_init:
2718         clk_disable_unprepare(dev->clk_ahb);
2719 err_clk_ahb:
2720         clk_disable_unprepare(dev->clk_per);
2721 err_clk_enable:
2722         pm_runtime_put_sync(dev->dev);
2723 err_pm_get:
2724         v4l2_fh_del(&ctx->fh);
2725         v4l2_fh_exit(&ctx->fh);
2726 err_coda_name_init:
2727         ida_free(&dev->ida, ctx->idx);
2728 err_coda_max:
2729         kfree(ctx);
2730         return ret;
2731 }
2732
2733 static int coda_release(struct file *file)
2734 {
2735         struct coda_dev *dev = video_drvdata(file);
2736         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2737
2738         coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2739
2740         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2741                 coda_bit_stream_end_flag(ctx);
2742
2743         /* If this instance is running, call .job_abort and wait for it to end */
2744         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2745
2746         if (ctx->vdoa)
2747                 vdoa_context_destroy(ctx->vdoa);
2748
2749         /* In case the instance was not running, we still need to call SEQ_END */
2750         if (ctx->ops->seq_end_work) {
2751                 queue_work(dev->workqueue, &ctx->seq_end_work);
2752                 flush_work(&ctx->seq_end_work);
2753         }
2754
2755         if (ctx->dev->devtype->product == CODA_DX6)
2756                 coda_free_aux_buf(dev, &ctx->workbuf);
2757
2758         v4l2_ctrl_handler_free(&ctx->ctrls);
2759         clk_disable_unprepare(dev->clk_ahb);
2760         clk_disable_unprepare(dev->clk_per);
2761         pm_runtime_put_sync(dev->dev);
2762         v4l2_fh_del(&ctx->fh);
2763         v4l2_fh_exit(&ctx->fh);
2764         ida_free(&dev->ida, ctx->idx);
2765         if (ctx->ops->release)
2766                 ctx->ops->release(ctx);
2767         debugfs_remove_recursive(ctx->debugfs_entry);
2768         kfree(ctx);
2769
2770         return 0;
2771 }
2772
2773 static const struct v4l2_file_operations coda_fops = {
2774         .owner          = THIS_MODULE,
2775         .open           = coda_open,
2776         .release        = coda_release,
2777         .poll           = v4l2_m2m_fop_poll,
2778         .unlocked_ioctl = video_ioctl2,
2779         .mmap           = v4l2_m2m_fop_mmap,
2780 };
2781
2782 static int coda_hw_init(struct coda_dev *dev)
2783 {
2784         u32 data;
2785         u16 *p;
2786         int i, ret;
2787
2788         ret = clk_prepare_enable(dev->clk_per);
2789         if (ret)
2790                 goto err_clk_per;
2791
2792         ret = clk_prepare_enable(dev->clk_ahb);
2793         if (ret)
2794                 goto err_clk_ahb;
2795
2796         reset_control_reset(dev->rstc);
2797
2798         /*
2799          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2800          * The 16-bit chars in the code buffer are in memory access
2801          * order, re-sort them to CODA order for register download.
2802          * Data in this SRAM survives a reboot.
2803          */
2804         p = (u16 *)dev->codebuf.vaddr;
2805         if (dev->devtype->product == CODA_DX6) {
2806                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2807                         data = CODA_DOWN_ADDRESS_SET(i) |
2808                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2809                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2810                 }
2811         } else {
2812                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2813                         data = CODA_DOWN_ADDRESS_SET(i) |
2814                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2815                                                         3 - (i % 4)]);
2816                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2817                 }
2818         }
2819
2820         /* Clear registers */
2821         for (i = 0; i < 64; i++)
2822                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2823
2824         /* Tell the BIT where to find everything it needs */
2825         if (dev->devtype->product == CODA_960 ||
2826             dev->devtype->product == CODA_7541 ||
2827             dev->devtype->product == CODA_HX4) {
2828                 coda_write(dev, dev->tempbuf.paddr,
2829                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2830                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2831         } else {
2832                 coda_write(dev, dev->workbuf.paddr,
2833                               CODA_REG_BIT_WORK_BUF_ADDR);
2834         }
2835         coda_write(dev, dev->codebuf.paddr,
2836                       CODA_REG_BIT_CODE_BUF_ADDR);
2837         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2838
2839         /* Set default values */
2840         switch (dev->devtype->product) {
2841         case CODA_DX6:
2842                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2843                            CODA_REG_BIT_STREAM_CTRL);
2844                 break;
2845         default:
2846                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2847                            CODA_REG_BIT_STREAM_CTRL);
2848         }
2849         if (dev->devtype->product == CODA_960)
2850                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2851                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2852         else
2853                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2854
2855         if (dev->devtype->product != CODA_DX6)
2856                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2857
2858         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2859                       CODA_REG_BIT_INT_ENABLE);
2860
2861         /* Reset VPU and start processor */
2862         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2863         data |= CODA_REG_RESET_ENABLE;
2864         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2865         udelay(10);
2866         data &= ~CODA_REG_RESET_ENABLE;
2867         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2868         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2869
2870         clk_disable_unprepare(dev->clk_ahb);
2871         clk_disable_unprepare(dev->clk_per);
2872
2873         return 0;
2874
2875 err_clk_ahb:
2876         clk_disable_unprepare(dev->clk_per);
2877 err_clk_per:
2878         return ret;
2879 }
2880
2881 static int coda_register_device(struct coda_dev *dev, int i)
2882 {
2883         struct video_device *vfd = &dev->vfd[i];
2884         const char *name;
2885         int ret;
2886
2887         if (i >= dev->devtype->num_vdevs)
2888                 return -EINVAL;
2889         name = dev->devtype->vdevs[i]->name;
2890
2891         strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2892         vfd->fops       = &coda_fops;
2893         vfd->ioctl_ops  = &coda_ioctl_ops;
2894         vfd->release    = video_device_release_empty;
2895         vfd->lock       = &dev->dev_mutex;
2896         vfd->v4l2_dev   = &dev->v4l2_dev;
2897         vfd->vfl_dir    = VFL_DIR_M2M;
2898         vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
2899         video_set_drvdata(vfd, dev);
2900
2901         /* Not applicable, use the selection API instead */
2902         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2903         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2904         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2905
2906         ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2907         if (!ret)
2908                 v4l2_info(&dev->v4l2_dev, "%s registered as %s\n",
2909                           name, video_device_node_name(vfd));
2910         return ret;
2911 }
2912
2913 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2914                                size_t size)
2915 {
2916         u32 *src = (u32 *)buf;
2917
2918         /* Check if the firmware has a 16-byte Freescale header, skip it */
2919         if (buf[0] == 'M' && buf[1] == 'X')
2920                 src += 4;
2921         /*
2922          * Check whether the firmware is in native order or pre-reordered for
2923          * memory access. The first instruction opcode always is 0xe40e.
2924          */
2925         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2926                 u32 *dst = dev->codebuf.vaddr;
2927                 int i;
2928
2929                 /* Firmware in native order, reorder while copying */
2930                 if (dev->devtype->product == CODA_DX6) {
2931                         for (i = 0; i < (size - 16) / 4; i++)
2932                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2933                 } else {
2934                         for (i = 0; i < (size - 16) / 4; i += 2) {
2935                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2936                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2937                         }
2938                 }
2939         } else {
2940                 /* Copy the already reordered firmware image */
2941                 memcpy(dev->codebuf.vaddr, src, size);
2942         }
2943 }
2944
2945 static void coda_fw_callback(const struct firmware *fw, void *context);
2946
2947 static int coda_firmware_request(struct coda_dev *dev)
2948 {
2949         char *fw;
2950
2951         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2952                 return -EINVAL;
2953
2954         fw = dev->devtype->firmware[dev->firmware];
2955
2956         dev_dbg(dev->dev, "requesting firmware '%s' for %s\n", fw,
2957                 coda_product_name(dev->devtype->product));
2958
2959         return request_firmware_nowait(THIS_MODULE, true, fw, dev->dev,
2960                                        GFP_KERNEL, dev, coda_fw_callback);
2961 }
2962
2963 static void coda_fw_callback(const struct firmware *fw, void *context)
2964 {
2965         struct coda_dev *dev = context;
2966         int i, ret;
2967
2968         if (!fw) {
2969                 dev->firmware++;
2970                 ret = coda_firmware_request(dev);
2971                 if (ret < 0) {
2972                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2973                         goto put_pm;
2974                 }
2975                 return;
2976         }
2977         if (dev->firmware > 0) {
2978                 /*
2979                  * Since we can't suppress warnings for failed asynchronous
2980                  * firmware requests, report that the fallback firmware was
2981                  * found.
2982                  */
2983                 dev_info(dev->dev, "Using fallback firmware %s\n",
2984                          dev->devtype->firmware[dev->firmware]);
2985         }
2986
2987         /* allocate auxiliary per-device code buffer for the BIT processor */
2988         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2989                                  dev->debugfs_root);
2990         if (ret < 0)
2991                 goto put_pm;
2992
2993         coda_copy_firmware(dev, fw->data, fw->size);
2994         release_firmware(fw);
2995
2996         ret = coda_hw_init(dev);
2997         if (ret < 0) {
2998                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2999                 goto put_pm;
3000         }
3001
3002         ret = coda_check_firmware(dev);
3003         if (ret < 0)
3004                 goto put_pm;
3005
3006         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
3007         if (IS_ERR(dev->m2m_dev)) {
3008                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
3009                 goto put_pm;
3010         }
3011
3012         for (i = 0; i < dev->devtype->num_vdevs; i++) {
3013                 ret = coda_register_device(dev, i);
3014                 if (ret) {
3015                         v4l2_err(&dev->v4l2_dev,
3016                                  "Failed to register %s video device: %d\n",
3017                                  dev->devtype->vdevs[i]->name, ret);
3018                         goto rel_vfd;
3019                 }
3020         }
3021
3022         pm_runtime_put_sync(dev->dev);
3023         return;
3024
3025 rel_vfd:
3026         while (--i >= 0)
3027                 video_unregister_device(&dev->vfd[i]);
3028         v4l2_m2m_release(dev->m2m_dev);
3029 put_pm:
3030         pm_runtime_put_sync(dev->dev);
3031 }
3032
3033 enum coda_platform {
3034         CODA_IMX27,
3035         CODA_IMX51,
3036         CODA_IMX53,
3037         CODA_IMX6Q,
3038         CODA_IMX6DL,
3039 };
3040
3041 static const struct coda_devtype coda_devdata[] = {
3042         [CODA_IMX27] = {
3043                 .firmware     = {
3044                         "vpu_fw_imx27_TO2.bin",
3045                         "vpu/vpu_fw_imx27_TO2.bin",
3046                         "v4l-codadx6-imx27.bin"
3047                 },
3048                 .product      = CODA_DX6,
3049                 .codecs       = codadx6_codecs,
3050                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
3051                 .vdevs        = codadx6_video_devices,
3052                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
3053                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
3054                 .iram_size    = 0xb000,
3055         },
3056         [CODA_IMX51] = {
3057                 .firmware     = {
3058                         "vpu_fw_imx51.bin",
3059                         "vpu/vpu_fw_imx51.bin",
3060                         "v4l-codahx4-imx51.bin"
3061                 },
3062                 .product      = CODA_HX4,
3063                 .codecs       = codahx4_codecs,
3064                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
3065                 .vdevs        = codahx4_video_devices,
3066                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
3067                 .workbuf_size = 128 * 1024,
3068                 .tempbuf_size = 304 * 1024,
3069                 .iram_size    = 0x14000,
3070         },
3071         [CODA_IMX53] = {
3072                 .firmware     = {
3073                         "vpu_fw_imx53.bin",
3074                         "vpu/vpu_fw_imx53.bin",
3075                         "v4l-coda7541-imx53.bin"
3076                 },
3077                 .product      = CODA_7541,
3078                 .codecs       = coda7_codecs,
3079                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
3080                 .vdevs        = coda7_video_devices,
3081                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
3082                 .workbuf_size = 128 * 1024,
3083                 .tempbuf_size = 304 * 1024,
3084                 .iram_size    = 0x14000,
3085         },
3086         [CODA_IMX6Q] = {
3087                 .firmware     = {
3088                         "vpu_fw_imx6q.bin",
3089                         "vpu/vpu_fw_imx6q.bin",
3090                         "v4l-coda960-imx6q.bin"
3091                 },
3092                 .product      = CODA_960,
3093                 .codecs       = coda9_codecs,
3094                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3095                 .vdevs        = coda9_video_devices,
3096                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3097                 .workbuf_size = 80 * 1024,
3098                 .tempbuf_size = 204 * 1024,
3099                 .iram_size    = 0x21000,
3100         },
3101         [CODA_IMX6DL] = {
3102                 .firmware     = {
3103                         "vpu_fw_imx6d.bin",
3104                         "vpu/vpu_fw_imx6d.bin",
3105                         "v4l-coda960-imx6dl.bin"
3106                 },
3107                 .product      = CODA_960,
3108                 .codecs       = coda9_codecs,
3109                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3110                 .vdevs        = coda9_video_devices,
3111                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3112                 .workbuf_size = 80 * 1024,
3113                 .tempbuf_size = 204 * 1024,
3114                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
3115         },
3116 };
3117
3118 static const struct of_device_id coda_dt_ids[] = {
3119         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3120         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
3121         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3122         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
3123         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
3124         { /* sentinel */ }
3125 };
3126 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3127
3128 static int coda_probe(struct platform_device *pdev)
3129 {
3130         struct device_node *np = pdev->dev.of_node;
3131         struct gen_pool *pool;
3132         struct coda_dev *dev;
3133         int ret, irq;
3134
3135         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
3136         if (!dev)
3137                 return -ENOMEM;
3138
3139         dev->devtype = of_device_get_match_data(&pdev->dev);
3140
3141         dev->dev = &pdev->dev;
3142         dev->clk_per = devm_clk_get(&pdev->dev, "per");
3143         if (IS_ERR(dev->clk_per)) {
3144                 dev_err(&pdev->dev, "Could not get per clock\n");
3145                 return PTR_ERR(dev->clk_per);
3146         }
3147
3148         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3149         if (IS_ERR(dev->clk_ahb)) {
3150                 dev_err(&pdev->dev, "Could not get ahb clock\n");
3151                 return PTR_ERR(dev->clk_ahb);
3152         }
3153
3154         /* Get  memory for physical registers */
3155         dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
3156         if (IS_ERR(dev->regs_base))
3157                 return PTR_ERR(dev->regs_base);
3158
3159         /* IRQ */
3160         irq = platform_get_irq_byname(pdev, "bit");
3161         if (irq < 0)
3162                 irq = platform_get_irq(pdev, 0);
3163         if (irq < 0)
3164                 return irq;
3165
3166         ret = devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0,
3167                                CODA_NAME "-video", dev);
3168         if (ret < 0) {
3169                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
3170                 return ret;
3171         }
3172
3173         /* JPEG IRQ */
3174         if (dev->devtype->product == CODA_960) {
3175                 irq = platform_get_irq_byname(pdev, "jpeg");
3176                 if (irq < 0)
3177                         return irq;
3178
3179                 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
3180                                                 coda9_jpeg_irq_handler,
3181                                                 IRQF_ONESHOT, CODA_NAME "-jpeg",
3182                                                 dev);
3183                 if (ret < 0) {
3184                         dev_err(&pdev->dev, "failed to request jpeg irq\n");
3185                         return ret;
3186                 }
3187         }
3188
3189         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
3190                                                               NULL);
3191         if (IS_ERR(dev->rstc)) {
3192                 ret = PTR_ERR(dev->rstc);
3193                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
3194                 return ret;
3195         }
3196
3197         /* Get IRAM pool from device tree */
3198         pool = of_gen_pool_get(np, "iram", 0);
3199         if (!pool) {
3200                 dev_err(&pdev->dev, "iram pool not available\n");
3201                 return -ENOMEM;
3202         }
3203         dev->iram_pool = pool;
3204
3205         /* Get vdoa_data if supported by the platform */
3206         dev->vdoa = coda_get_vdoa_data();
3207         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
3208                 return -EPROBE_DEFER;
3209
3210         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3211         if (ret)
3212                 return ret;
3213
3214         ratelimit_default_init(&dev->mb_err_rs);
3215         mutex_init(&dev->dev_mutex);
3216         mutex_init(&dev->coda_mutex);
3217         ida_init(&dev->ida);
3218
3219         dev->debugfs_root = debugfs_create_dir("coda", NULL);
3220
3221         /* allocate auxiliary per-device buffers for the BIT processor */
3222         if (dev->devtype->product == CODA_DX6) {
3223                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3224                                          dev->devtype->workbuf_size, "workbuf",
3225                                          dev->debugfs_root);
3226                 if (ret < 0)
3227                         goto err_v4l2_register;
3228         }
3229
3230         if (dev->devtype->tempbuf_size) {
3231                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3232                                          dev->devtype->tempbuf_size, "tempbuf",
3233                                          dev->debugfs_root);
3234                 if (ret < 0)
3235                         goto err_v4l2_register;
3236         }
3237
3238         dev->iram.size = dev->devtype->iram_size;
3239         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
3240                                              &dev->iram.paddr);
3241         if (!dev->iram.vaddr) {
3242                 dev_warn(&pdev->dev, "unable to alloc iram\n");
3243         } else {
3244                 memset(dev->iram.vaddr, 0, dev->iram.size);
3245                 dev->iram.blob.data = dev->iram.vaddr;
3246                 dev->iram.blob.size = dev->iram.size;
3247                 dev->iram.dentry = debugfs_create_blob("iram", 0444,
3248                                                        dev->debugfs_root,
3249                                                        &dev->iram.blob);
3250         }
3251
3252         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
3253         if (!dev->workqueue) {
3254                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
3255                 ret = -ENOMEM;
3256                 goto err_v4l2_register;
3257         }
3258
3259         platform_set_drvdata(pdev, dev);
3260
3261         /*
3262          * Start activated so we can directly call coda_hw_init in
3263          * coda_fw_callback regardless of whether CONFIG_PM is
3264          * enabled or whether the device is associated with a PM domain.
3265          */
3266         pm_runtime_get_noresume(&pdev->dev);
3267         pm_runtime_set_active(&pdev->dev);
3268         pm_runtime_enable(&pdev->dev);
3269
3270         ret = coda_firmware_request(dev);
3271         if (ret)
3272                 goto err_alloc_workqueue;
3273         return 0;
3274
3275 err_alloc_workqueue:
3276         pm_runtime_disable(&pdev->dev);
3277         pm_runtime_put_noidle(&pdev->dev);
3278         destroy_workqueue(dev->workqueue);
3279 err_v4l2_register:
3280         v4l2_device_unregister(&dev->v4l2_dev);
3281         return ret;
3282 }
3283
3284 static int coda_remove(struct platform_device *pdev)
3285 {
3286         struct coda_dev *dev = platform_get_drvdata(pdev);
3287         int i;
3288
3289         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
3290                 if (video_get_drvdata(&dev->vfd[i]))
3291                         video_unregister_device(&dev->vfd[i]);
3292         }
3293         if (dev->m2m_dev)
3294                 v4l2_m2m_release(dev->m2m_dev);
3295         pm_runtime_disable(&pdev->dev);
3296         v4l2_device_unregister(&dev->v4l2_dev);
3297         destroy_workqueue(dev->workqueue);
3298         if (dev->iram.vaddr)
3299                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
3300                               dev->iram.size);
3301         coda_free_aux_buf(dev, &dev->codebuf);
3302         coda_free_aux_buf(dev, &dev->tempbuf);
3303         coda_free_aux_buf(dev, &dev->workbuf);
3304         debugfs_remove_recursive(dev->debugfs_root);
3305         ida_destroy(&dev->ida);
3306         return 0;
3307 }
3308
3309 #ifdef CONFIG_PM
3310 static int coda_runtime_resume(struct device *dev)
3311 {
3312         struct coda_dev *cdev = dev_get_drvdata(dev);
3313         int ret = 0;
3314
3315         if (dev->pm_domain && cdev->codebuf.vaddr) {
3316                 ret = coda_hw_init(cdev);
3317                 if (ret)
3318                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
3319         }
3320
3321         return ret;
3322 }
3323 #endif
3324
3325 static const struct dev_pm_ops coda_pm_ops = {
3326         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
3327 };
3328
3329 static struct platform_driver coda_driver = {
3330         .probe  = coda_probe,
3331         .remove = coda_remove,
3332         .driver = {
3333                 .name   = CODA_NAME,
3334                 .of_match_table = coda_dt_ids,
3335                 .pm     = &coda_pm_ops,
3336         },
3337 };
3338
3339 module_platform_driver(coda_driver);
3340
3341 MODULE_LICENSE("GPL");
3342 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
3343 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");