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

   1 /*
   2  * Coda multi-standard codec IP
   3  *
   4  * Copyright (C) 2012 Vista Silicon S.L.
   5  *    Javier Martin, <javier.martin@vista-silicon.com>
   6  *    Xavier Duret
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/clk.h>
  15 #include <linux/debugfs.h>
  16 #include <linux/delay.h>
  17 #include <linux/firmware.h>
  18 #include <linux/gcd.h>
  19 #include <linux/genalloc.h>
  20 #include <linux/idr.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/io.h>
  23 #include <linux/irq.h>
  24 #include <linux/kfifo.h>
  25 #include <linux/module.h>
  26 #include <linux/of_device.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/pm_runtime.h>
  29 #include <linux/slab.h>
  30 #include <linux/videodev2.h>
  31 #include <linux/of.h>
  32 #include <linux/platform_data/media/coda.h>
  33 #include <linux/reset.h>
  34
  35 #include <media/v4l2-ctrls.h>
  36 #include <media/v4l2-device.h>
  37 #include <media/v4l2-event.h>
  38 #include <media/v4l2-ioctl.h>
  39 #include <media/v4l2-mem2mem.h>
  40 #include <media/videobuf2-v4l2.h>
  41 #include <media/videobuf2-dma-contig.h>
  42 #include <media/videobuf2-vmalloc.h>
  43
  44 #include "coda.h"
  45 #include "imx-vdoa.h"
  46
  47 #define CODA_NAME               "coda"
  48
  49 #define CODADX6_MAX_INSTANCES   4
  50 #define CODA_MAX_FORMATS        4
  51
  52 #define CODA_ISRAM_SIZE (2048 * 2)
  53
  54 #define MIN_W 176
  55 #define MIN_H 144
  56
  57 #define S_ALIGN         1 /* multiple of 2 */
  58 #define W_ALIGN         1 /* multiple of 2 */
  59 #define H_ALIGN         1 /* multiple of 2 */
  60
  61 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  62
  63 int coda_debug;
  64 module_param(coda_debug, int, 0644);
  65 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
  66
  67 static int disable_tiling;
  68 module_param(disable_tiling, int, 0644);
  69 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
  70
  71 static int disable_vdoa;
  72 module_param(disable_vdoa, int, 0644);
  73 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
  74
  75 static int enable_bwb = 0;
  76 module_param(enable_bwb, int, 0644);
  77 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
  78
  79 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
  80 {
  81         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  82                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  83         writel(data, dev->regs_base + reg);
  84 }
  85
  86 unsigned int coda_read(struct coda_dev *dev, u32 reg)
  87 {
  88         u32 data;
  89
  90         data = readl(dev->regs_base + reg);
  91         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  92                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  93         return data;
  94 }
  95
  96 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
  97                      struct vb2_v4l2_buffer *buf, unsigned int reg_y)
  98 {
  99         u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
 100         u32 base_cb, base_cr;
 101
 102         switch (q_data->fourcc) {
 103         case V4L2_PIX_FMT_YUYV:
 104                 /* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
 105         case V4L2_PIX_FMT_NV12:
 106         case V4L2_PIX_FMT_YUV420:
 107         default:
 108                 base_cb = base_y + q_data->bytesperline * q_data->height;
 109                 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
 110                 break;
 111         case V4L2_PIX_FMT_YVU420:
 112                 /* Switch Cb and Cr for YVU420 format */
 113                 base_cr = base_y + q_data->bytesperline * q_data->height;
 114                 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
 115                 break;
 116         case V4L2_PIX_FMT_YUV422P:
 117                 base_cb = base_y + q_data->bytesperline * q_data->height;
 118                 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
 119         }
 120
 121         coda_write(ctx->dev, base_y, reg_y);
 122         coda_write(ctx->dev, base_cb, reg_y + 4);
 123         coda_write(ctx->dev, base_cr, reg_y + 8);
 124 }
 125
 126 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
 127         { mode, src_fourcc, dst_fourcc, max_w, max_h }
 128
 129 /*
 130  * Arrays of codecs supported by each given version of Coda:
 131  *  i.MX27 -> codadx6
 132  *  i.MX51 -> codahx4
 133  *  i.MX53 -> coda7
 134  *  i.MX6  -> coda960
 135  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
 136  */
 137 static const struct coda_codec codadx6_codecs[] = {
 138         CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
 139         CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
 140 };
 141
 142 static const struct coda_codec codahx4_codecs[] = {
 143         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   720, 576),
 144         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 145         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 146         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1280, 720),
 147 };
 148
 149 static const struct coda_codec coda7_codecs[] = {
 150         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
 151         CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
 152         CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 153         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 154         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 155         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 156         CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 157 };
 158
 159 static const struct coda_codec coda9_codecs[] = {
 160         CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
 161         CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
 162         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 163         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 164         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 165 };
 166
 167 struct coda_video_device {
 168         const char *name;
 169         enum coda_inst_type type;
 170         const struct coda_context_ops *ops;
 171         bool direct;
 172         u32 src_formats[CODA_MAX_FORMATS];
 173         u32 dst_formats[CODA_MAX_FORMATS];
 174 };
 175
 176 static const struct coda_video_device coda_bit_encoder = {
 177         .name = "coda-encoder",
 178         .type = CODA_INST_ENCODER,
 179         .ops = &coda_bit_encode_ops,
 180         .src_formats = {
 181                 V4L2_PIX_FMT_NV12,
 182                 V4L2_PIX_FMT_YUV420,
 183                 V4L2_PIX_FMT_YVU420,
 184         },
 185         .dst_formats = {
 186                 V4L2_PIX_FMT_H264,
 187                 V4L2_PIX_FMT_MPEG4,
 188         },
 189 };
 190
 191 static const struct coda_video_device coda_bit_jpeg_encoder = {
 192         .name = "coda-jpeg-encoder",
 193         .type = CODA_INST_ENCODER,
 194         .ops = &coda_bit_encode_ops,
 195         .src_formats = {
 196                 V4L2_PIX_FMT_NV12,
 197                 V4L2_PIX_FMT_YUV420,
 198                 V4L2_PIX_FMT_YVU420,
 199                 V4L2_PIX_FMT_YUV422P,
 200         },
 201         .dst_formats = {
 202                 V4L2_PIX_FMT_JPEG,
 203         },
 204 };
 205
 206 static const struct coda_video_device coda_bit_decoder = {
 207         .name = "coda-decoder",
 208         .type = CODA_INST_DECODER,
 209         .ops = &coda_bit_decode_ops,
 210         .src_formats = {
 211                 V4L2_PIX_FMT_H264,
 212                 V4L2_PIX_FMT_MPEG2,
 213                 V4L2_PIX_FMT_MPEG4,
 214         },
 215         .dst_formats = {
 216                 V4L2_PIX_FMT_NV12,
 217                 V4L2_PIX_FMT_YUV420,
 218                 V4L2_PIX_FMT_YVU420,
 219                 /*
 220                  * If V4L2_PIX_FMT_YUYV should be default,
 221                  * set_default_params() must be adjusted.
 222                  */
 223                 V4L2_PIX_FMT_YUYV,
 224         },
 225 };
 226
 227 static const struct coda_video_device coda_bit_jpeg_decoder = {
 228         .name = "coda-jpeg-decoder",
 229         .type = CODA_INST_DECODER,
 230         .ops = &coda_bit_decode_ops,
 231         .src_formats = {
 232                 V4L2_PIX_FMT_JPEG,
 233         },
 234         .dst_formats = {
 235                 V4L2_PIX_FMT_NV12,
 236                 V4L2_PIX_FMT_YUV420,
 237                 V4L2_PIX_FMT_YVU420,
 238                 V4L2_PIX_FMT_YUV422P,
 239         },
 240 };
 241
 242 static const struct coda_video_device *codadx6_video_devices[] = {
 243         &coda_bit_encoder,
 244 };
 245
 246 static const struct coda_video_device *codahx4_video_devices[] = {
 247         &coda_bit_encoder,
 248         &coda_bit_decoder,
 249 };
 250
 251 static const struct coda_video_device *coda7_video_devices[] = {
 252         &coda_bit_jpeg_encoder,
 253         &coda_bit_jpeg_decoder,
 254         &coda_bit_encoder,
 255         &coda_bit_decoder,
 256 };
 257
 258 static const struct coda_video_device *coda9_video_devices[] = {
 259         &coda_bit_encoder,
 260         &coda_bit_decoder,
 261 };
 262
 263 /*
 264  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 265  * tables.
 266  */
 267 static u32 coda_format_normalize_yuv(u32 fourcc)
 268 {
 269         switch (fourcc) {
 270         case V4L2_PIX_FMT_NV12:
 271         case V4L2_PIX_FMT_YUV420:
 272         case V4L2_PIX_FMT_YVU420:
 273         case V4L2_PIX_FMT_YUV422P:
 274         case V4L2_PIX_FMT_YUYV:
 275                 return V4L2_PIX_FMT_YUV420;
 276         default:
 277                 return fourcc;
 278         }
 279 }
 280
 281 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 282                                                 int src_fourcc, int dst_fourcc)
 283 {
 284         const struct coda_codec *codecs = dev->devtype->codecs;
 285         int num_codecs = dev->devtype->num_codecs;
 286         int k;
 287
 288         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 289         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 290         if (src_fourcc == dst_fourcc)
 291                 return NULL;
 292
 293         for (k = 0; k < num_codecs; k++) {
 294                 if (codecs[k].src_fourcc == src_fourcc &&
 295                     codecs[k].dst_fourcc == dst_fourcc)
 296                         break;
 297         }
 298
 299         if (k == num_codecs)
 300                 return NULL;
 301
 302         return &codecs[k];
 303 }
 304
 305 static void coda_get_max_dimensions(struct coda_dev *dev,
 306                                     const struct coda_codec *codec,
 307                                     int *max_w, int *max_h)
 308 {
 309         const struct coda_codec *codecs = dev->devtype->codecs;
 310         int num_codecs = dev->devtype->num_codecs;
 311         unsigned int w, h;
 312         int k;
 313
 314         if (codec) {
 315                 w = codec->max_w;
 316                 h = codec->max_h;
 317         } else {
 318                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 319                         w = max(w, codecs[k].max_w);
 320                         h = max(h, codecs[k].max_h);
 321                 }
 322         }
 323
 324         if (max_w)
 325                 *max_w = w;
 326         if (max_h)
 327                 *max_h = h;
 328 }
 329
 330 static const struct coda_video_device *to_coda_video_device(struct video_device
 331                                                             *vdev)
 332 {
 333         struct coda_dev *dev = video_get_drvdata(vdev);
 334         unsigned int i = vdev - dev->vfd;
 335
 336         if (i >= dev->devtype->num_vdevs)
 337                 return NULL;
 338
 339         return dev->devtype->vdevs[i];
 340 }
 341
 342 const char *coda_product_name(int product)
 343 {
 344         static char buf[9];
 345
 346         switch (product) {
 347         case CODA_DX6:
 348                 return "CodaDx6";
 349         case CODA_HX4:
 350                 return "CodaHx4";
 351         case CODA_7541:
 352                 return "CODA7541";
 353         case CODA_960:
 354                 return "CODA960";
 355         default:
 356                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 357                 return buf;
 358         }
 359 }
 360
 361 static struct vdoa_data *coda_get_vdoa_data(void)
 362 {
 363         struct device_node *vdoa_node;
 364         struct platform_device *vdoa_pdev;
 365         struct vdoa_data *vdoa_data = NULL;
 366
 367         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 368         if (!vdoa_node)
 369                 return NULL;
 370
 371         vdoa_pdev = of_find_device_by_node(vdoa_node);
 372         if (!vdoa_pdev)
 373                 goto out;
 374
 375         vdoa_data = platform_get_drvdata(vdoa_pdev);
 376         if (!vdoa_data)
 377                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 378
 379 out:
 380         if (vdoa_node)
 381                 of_node_put(vdoa_node);
 382
 383         return vdoa_data;
 384 }
 385
 386 /*
 387  * V4L2 ioctl() operations.
 388  */
 389 static int coda_querycap(struct file *file, void *priv,
 390                          struct v4l2_capability *cap)
 391 {
 392         struct coda_ctx *ctx = fh_to_ctx(priv);
 393
 394         strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 395         strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 396                 sizeof(cap->card));
 397         strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 398         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 399         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 400
 401         return 0;
 402 }
 403
 404 static int coda_enum_fmt(struct file *file, void *priv,
 405                          struct v4l2_fmtdesc *f)
 406 {
 407         struct video_device *vdev = video_devdata(file);
 408         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 409         struct coda_ctx *ctx = fh_to_ctx(priv);
 410         const u32 *formats;
 411
 412         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 413                 formats = cvd->src_formats;
 414         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 415                 formats = cvd->dst_formats;
 416         else
 417                 return -EINVAL;
 418
 419         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 420                 return -EINVAL;
 421
 422         /* Skip YUYV if the vdoa is not available */
 423         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 424             formats[f->index] == V4L2_PIX_FMT_YUYV)
 425                 return -EINVAL;
 426
 427         f->pixelformat = formats[f->index];
 428
 429         return 0;
 430 }
 431
 432 static int coda_g_fmt(struct file *file, void *priv,
 433                       struct v4l2_format *f)
 434 {
 435         struct coda_q_data *q_data;
 436         struct coda_ctx *ctx = fh_to_ctx(priv);
 437
 438         q_data = get_q_data(ctx, f->type);
 439         if (!q_data)
 440                 return -EINVAL;
 441
 442         f->fmt.pix.field        = V4L2_FIELD_NONE;
 443         f->fmt.pix.pixelformat  = q_data->fourcc;
 444         f->fmt.pix.width        = q_data->width;
 445         f->fmt.pix.height       = q_data->height;
 446         f->fmt.pix.bytesperline = q_data->bytesperline;
 447
 448         f->fmt.pix.sizeimage    = q_data->sizeimage;
 449         f->fmt.pix.colorspace   = ctx->colorspace;
 450         f->fmt.pix.xfer_func    = ctx->xfer_func;
 451         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 452         f->fmt.pix.quantization = ctx->quantization;
 453
 454         return 0;
 455 }
 456
 457 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 458 {
 459         struct coda_q_data *q_data;
 460         const u32 *formats;
 461         int i;
 462
 463         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 464                 formats = ctx->cvd->src_formats;
 465         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 466                 formats = ctx->cvd->dst_formats;
 467         else
 468                 return -EINVAL;
 469
 470         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 471                 /* Skip YUYV if the vdoa is not available */
 472                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 473                     formats[i] == V4L2_PIX_FMT_YUYV)
 474                         continue;
 475
 476                 if (formats[i] == f->fmt.pix.pixelformat) {
 477                         f->fmt.pix.pixelformat = formats[i];
 478                         return 0;
 479                 }
 480         }
 481
 482         /* Fall back to currently set pixelformat */
 483         q_data = get_q_data(ctx, f->type);
 484         f->fmt.pix.pixelformat = q_data->fourcc;
 485
 486         return 0;
 487 }
 488
 489 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 490                              bool *use_vdoa)
 491 {
 492         int err;
 493
 494         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 495                 return -EINVAL;
 496
 497         if (!use_vdoa)
 498                 return -EINVAL;
 499
 500         if (!ctx->vdoa) {
 501                 *use_vdoa = false;
 502                 return 0;
 503         }
 504
 505         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 506                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 507         if (err) {
 508                 *use_vdoa = false;
 509                 return 0;
 510         }
 511
 512         *use_vdoa = true;
 513         return 0;
 514 }
 515
 516 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 517                                             u32 width, u32 height)
 518 {
 519         /*
 520          * This is a rough estimate for sensible compressed buffer
 521          * sizes (between 1 and 16 bits per pixel). This could be
 522          * improved by better format specific worst case estimates.
 523          */
 524         return round_up(clamp(sizeimage, width * height / 8,
 525                                          width * height * 2), PAGE_SIZE);
 526 }
 527
 528 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 529                         struct v4l2_format *f)
 530 {
 531         struct coda_dev *dev = ctx->dev;
 532         unsigned int max_w, max_h;
 533         enum v4l2_field field;
 534
 535         field = f->fmt.pix.field;
 536         if (field == V4L2_FIELD_ANY)
 537                 field = V4L2_FIELD_NONE;
 538         else if (V4L2_FIELD_NONE != field)
 539                 return -EINVAL;
 540
 541         /* V4L2 specification suggests the driver corrects the format struct
 542          * if any of the dimensions is unsupported */
 543         f->fmt.pix.field = field;
 544
 545         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 546         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 547                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 548                               S_ALIGN);
 549
 550         switch (f->fmt.pix.pixelformat) {
 551         case V4L2_PIX_FMT_NV12:
 552         case V4L2_PIX_FMT_YUV420:
 553         case V4L2_PIX_FMT_YVU420:
 554                 /*
 555                  * Frame stride must be at least multiple of 8,
 556                  * but multiple of 16 for h.264 or JPEG 4:2:x
 557                  */
 558                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 559                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 560                                         f->fmt.pix.height * 3 / 2;
 561                 break;
 562         case V4L2_PIX_FMT_YUYV:
 563                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 564                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 565                                         f->fmt.pix.height;
 566                 break;
 567         case V4L2_PIX_FMT_YUV422P:
 568                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 569                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 570                                         f->fmt.pix.height * 2;
 571                 break;
 572         case V4L2_PIX_FMT_JPEG:
 573         case V4L2_PIX_FMT_H264:
 574         case V4L2_PIX_FMT_MPEG4:
 575         case V4L2_PIX_FMT_MPEG2:
 576                 f->fmt.pix.bytesperline = 0;
 577                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 578                                                         f->fmt.pix.sizeimage,
 579                                                         f->fmt.pix.width,
 580                                                         f->fmt.pix.height);
 581                 break;
 582         default:
 583                 BUG();
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 590                                 struct v4l2_format *f)
 591 {
 592         struct coda_ctx *ctx = fh_to_ctx(priv);
 593         const struct coda_q_data *q_data_src;
 594         const struct coda_codec *codec;
 595         struct vb2_queue *src_vq;
 596         int ret;
 597         bool use_vdoa;
 598
 599         ret = coda_try_pixelformat(ctx, f);
 600         if (ret < 0)
 601                 return ret;
 602
 603         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 604
 605         /*
 606          * If the source format is already fixed, only allow the same output
 607          * resolution
 608          */
 609         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 610         if (vb2_is_streaming(src_vq)) {
 611                 f->fmt.pix.width = q_data_src->width;
 612                 f->fmt.pix.height = q_data_src->height;
 613         }
 614
 615         f->fmt.pix.colorspace = ctx->colorspace;
 616         f->fmt.pix.xfer_func = ctx->xfer_func;
 617         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 618         f->fmt.pix.quantization = ctx->quantization;
 619
 620         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 621         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 622                                 f->fmt.pix.pixelformat);
 623         if (!codec)
 624                 return -EINVAL;
 625
 626         ret = coda_try_fmt(ctx, codec, f);
 627         if (ret < 0)
 628                 return ret;
 629
 630         /* The h.264 decoder only returns complete 16x16 macroblocks */
 631         if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
 632                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
 633                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 634                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 635                                        f->fmt.pix.height * 3 / 2;
 636
 637                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 638                 if (ret < 0)
 639                         return ret;
 640
 641                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 642                         if (!use_vdoa)
 643                                 return -EINVAL;
 644
 645                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 646                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 647                                 f->fmt.pix.height;
 648                 }
 649         }
 650
 651         return 0;
 652 }
 653
 654 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 655 {
 656         enum v4l2_colorspace colorspace;
 657
 658         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 659                 colorspace = V4L2_COLORSPACE_JPEG;
 660         else if (fmt->width <= 720 && fmt->height <= 576)
 661                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 662         else
 663                 colorspace = V4L2_COLORSPACE_REC709;
 664
 665         fmt->colorspace = colorspace;
 666         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 667         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 668         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 669 }
 670
 671 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 672                                 struct v4l2_format *f)
 673 {
 674         struct coda_ctx *ctx = fh_to_ctx(priv);
 675         struct coda_dev *dev = ctx->dev;
 676         const struct coda_q_data *q_data_dst;
 677         const struct coda_codec *codec;
 678         int ret;
 679
 680         ret = coda_try_pixelformat(ctx, f);
 681         if (ret < 0)
 682                 return ret;
 683
 684         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 685                 coda_set_default_colorspace(&f->fmt.pix);
 686
 687         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 688         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 689
 690         return coda_try_fmt(ctx, codec, f);
 691 }
 692
 693 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 694                       struct v4l2_rect *r)
 695 {
 696         struct coda_q_data *q_data;
 697         struct vb2_queue *vq;
 698
 699         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 700         if (!vq)
 701                 return -EINVAL;
 702
 703         q_data = get_q_data(ctx, f->type);
 704         if (!q_data)
 705                 return -EINVAL;
 706
 707         if (vb2_is_busy(vq)) {
 708                 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
 709                 return -EBUSY;
 710         }
 711
 712         q_data->fourcc = f->fmt.pix.pixelformat;
 713         q_data->width = f->fmt.pix.width;
 714         q_data->height = f->fmt.pix.height;
 715         q_data->bytesperline = f->fmt.pix.bytesperline;
 716         q_data->sizeimage = f->fmt.pix.sizeimage;
 717         if (r) {
 718                 q_data->rect = *r;
 719         } else {
 720                 q_data->rect.left = 0;
 721                 q_data->rect.top = 0;
 722                 q_data->rect.width = f->fmt.pix.width;
 723                 q_data->rect.height = f->fmt.pix.height;
 724         }
 725
 726         switch (f->fmt.pix.pixelformat) {
 727         case V4L2_PIX_FMT_YUYV:
 728                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 729                 break;
 730         case V4L2_PIX_FMT_NV12:
 731                 if (!disable_tiling) {
 732                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 733                         break;
 734                 }
 735                 /* else fall through */
 736         case V4L2_PIX_FMT_YUV420:
 737         case V4L2_PIX_FMT_YVU420:
 738                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 739                 break;
 740         default:
 741                 break;
 742         }
 743
 744         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 745             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 746             ctx->use_vdoa)
 747                 vdoa_context_configure(ctx->vdoa,
 748                                        round_up(f->fmt.pix.width, 16),
 749                                        f->fmt.pix.height,
 750                                        f->fmt.pix.pixelformat);
 751         else
 752                 ctx->use_vdoa = false;
 753
 754         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 755                 "Setting format for type %d, wxh: %dx%d, fmt: %4.4s %c\n",
 756                 f->type, q_data->width, q_data->height,
 757                 (char *)&q_data->fourcc,
 758                 (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 759
 760         return 0;
 761 }
 762
 763 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 764                               struct v4l2_format *f)
 765 {
 766         struct coda_ctx *ctx = fh_to_ctx(priv);
 767         struct coda_q_data *q_data_src;
 768         struct v4l2_rect r;
 769         int ret;
 770
 771         ret = coda_try_fmt_vid_cap(file, priv, f);
 772         if (ret)
 773                 return ret;
 774
 775         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 776         r.left = 0;
 777         r.top = 0;
 778         r.width = q_data_src->width;
 779         r.height = q_data_src->height;
 780
 781         ret = coda_s_fmt(ctx, f, &r);
 782         if (ret)
 783                 return ret;
 784
 785         if (ctx->inst_type != CODA_INST_ENCODER)
 786                 return 0;
 787
 788         ctx->colorspace = f->fmt.pix.colorspace;
 789         ctx->xfer_func = f->fmt.pix.xfer_func;
 790         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 791         ctx->quantization = f->fmt.pix.quantization;
 792
 793         return 0;
 794 }
 795
 796 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 797                               struct v4l2_format *f)
 798 {
 799         struct coda_ctx *ctx = fh_to_ctx(priv);
 800         struct v4l2_format f_cap;
 801         struct vb2_queue *dst_vq;
 802         int ret;
 803
 804         ret = coda_try_fmt_vid_out(file, priv, f);
 805         if (ret)
 806                 return ret;
 807
 808         ret = coda_s_fmt(ctx, f, NULL);
 809         if (ret)
 810                 return ret;
 811
 812         if (ctx->inst_type != CODA_INST_DECODER)
 813                 return 0;
 814
 815         ctx->colorspace = f->fmt.pix.colorspace;
 816         ctx->xfer_func = f->fmt.pix.xfer_func;
 817         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 818         ctx->quantization = f->fmt.pix.quantization;
 819
 820         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 821         if (!dst_vq)
 822                 return -EINVAL;
 823
 824         /*
 825          * Setting the capture queue format is not possible while the capture
 826          * queue is still busy. This is not an error, but the user will have to
 827          * make sure themselves that the capture format is set correctly before
 828          * starting the output queue again.
 829          */
 830         if (vb2_is_busy(dst_vq))
 831                 return 0;
 832
 833         memset(&f_cap, 0, sizeof(f_cap));
 834         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 835         coda_g_fmt(file, priv, &f_cap);
 836         f_cap.fmt.pix.width = f->fmt.pix.width;
 837         f_cap.fmt.pix.height = f->fmt.pix.height;
 838
 839         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 840 }
 841
 842 static int coda_reqbufs(struct file *file, void *priv,
 843                         struct v4l2_requestbuffers *rb)
 844 {
 845         struct coda_ctx *ctx = fh_to_ctx(priv);
 846         int ret;
 847
 848         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 849         if (ret)
 850                 return ret;
 851
 852         /*
 853          * Allow to allocate instance specific per-context buffers, such as
 854          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 855          */
 856         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 857                 return ctx->ops->reqbufs(ctx, rb);
 858
 859         return 0;
 860 }
 861
 862 static int coda_qbuf(struct file *file, void *priv,
 863                      struct v4l2_buffer *buf)
 864 {
 865         struct coda_ctx *ctx = fh_to_ctx(priv);
 866
 867         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 868 }
 869
 870 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
 871                                       struct vb2_v4l2_buffer *buf)
 872 {
 873         return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
 874                 (buf->sequence == (ctx->qsequence - 1)));
 875 }
 876
 877 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
 878                        enum vb2_buffer_state state)
 879 {
 880         const struct v4l2_event eos_event = {
 881                 .type = V4L2_EVENT_EOS
 882         };
 883
 884         if (coda_buf_is_end_of_stream(ctx, buf)) {
 885                 buf->flags |= V4L2_BUF_FLAG_LAST;
 886
 887                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 888         }
 889
 890         v4l2_m2m_buf_done(buf, state);
 891 }
 892
 893 static int coda_g_selection(struct file *file, void *fh,
 894                             struct v4l2_selection *s)
 895 {
 896         struct coda_ctx *ctx = fh_to_ctx(fh);
 897         struct coda_q_data *q_data;
 898         struct v4l2_rect r, *rsel;
 899
 900         q_data = get_q_data(ctx, s->type);
 901         if (!q_data)
 902                 return -EINVAL;
 903
 904         r.left = 0;
 905         r.top = 0;
 906         r.width = q_data->width;
 907         r.height = q_data->height;
 908         rsel = &q_data->rect;
 909
 910         switch (s->target) {
 911         case V4L2_SEL_TGT_CROP_DEFAULT:
 912         case V4L2_SEL_TGT_CROP_BOUNDS:
 913                 rsel = &r;
 914                 /* fallthrough */
 915         case V4L2_SEL_TGT_CROP:
 916                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 917                         return -EINVAL;
 918                 break;
 919         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 920         case V4L2_SEL_TGT_COMPOSE_PADDED:
 921                 rsel = &r;
 922                 /* fallthrough */
 923         case V4L2_SEL_TGT_COMPOSE:
 924         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 925                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 926                         return -EINVAL;
 927                 break;
 928         default:
 929                 return -EINVAL;
 930         }
 931
 932         s->r = *rsel;
 933
 934         return 0;
 935 }
 936
 937 static int coda_s_selection(struct file *file, void *fh,
 938                             struct v4l2_selection *s)
 939 {
 940         struct coda_ctx *ctx = fh_to_ctx(fh);
 941         struct coda_q_data *q_data;
 942
 943         if (ctx->inst_type == CODA_INST_ENCODER &&
 944             s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
 945             s->target == V4L2_SEL_TGT_CROP) {
 946                 q_data = get_q_data(ctx, s->type);
 947                 if (!q_data)
 948                         return -EINVAL;
 949
 950                 s->r.left = 0;
 951                 s->r.top = 0;
 952                 s->r.width = clamp(s->r.width, 2U, q_data->width);
 953                 s->r.height = clamp(s->r.height, 2U, q_data->height);
 954
 955                 if (s->flags & V4L2_SEL_FLAG_LE) {
 956                         s->r.width = round_up(s->r.width, 2);
 957                         s->r.height = round_up(s->r.height, 2);
 958                 } else {
 959                         s->r.width = round_down(s->r.width, 2);
 960                         s->r.height = round_down(s->r.height, 2);
 961                 }
 962
 963                 q_data->rect = s->r;
 964
 965                 return 0;
 966         }
 967
 968         return coda_g_selection(file, fh, s);
 969 }
 970
 971 static int coda_try_encoder_cmd(struct file *file, void *fh,
 972                                 struct v4l2_encoder_cmd *ec)
 973 {
 974         if (ec->cmd != V4L2_ENC_CMD_STOP)
 975                 return -EINVAL;
 976
 977         if (ec->flags & V4L2_ENC_CMD_STOP_AT_GOP_END)
 978                 return -EINVAL;
 979
 980         return 0;
 981 }
 982
 983 static int coda_encoder_cmd(struct file *file, void *fh,
 984                             struct v4l2_encoder_cmd *ec)
 985 {
 986         struct coda_ctx *ctx = fh_to_ctx(fh);
 987         struct vb2_queue *dst_vq;
 988         int ret;
 989
 990         ret = coda_try_encoder_cmd(file, fh, ec);
 991         if (ret < 0)
 992                 return ret;
 993
 994         /* Ignore encoder stop command silently in decoder context */
 995         if (ctx->inst_type != CODA_INST_ENCODER)
 996                 return 0;
 997
 998         /* Set the stream-end flag on this context */
 999         ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1000
1001         flush_work(&ctx->pic_run_work);
1002
1003         /* If there is no buffer in flight, wake up */
1004         if (!ctx->streamon_out || ctx->qsequence == ctx->osequence) {
1005                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1006                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
1007                 dst_vq->last_buffer_dequeued = true;
1008                 wake_up(&dst_vq->done_wq);
1009         }
1010
1011         return 0;
1012 }
1013
1014 static int coda_try_decoder_cmd(struct file *file, void *fh,
1015                                 struct v4l2_decoder_cmd *dc)
1016 {
1017         if (dc->cmd != V4L2_DEC_CMD_STOP)
1018                 return -EINVAL;
1019
1020         if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
1021                 return -EINVAL;
1022
1023         if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
1024                 return -EINVAL;
1025
1026         return 0;
1027 }
1028
1029 static int coda_decoder_cmd(struct file *file, void *fh,
1030                             struct v4l2_decoder_cmd *dc)
1031 {
1032         struct coda_ctx *ctx = fh_to_ctx(fh);
1033         int ret;
1034
1035         ret = coda_try_decoder_cmd(file, fh, dc);
1036         if (ret < 0)
1037                 return ret;
1038
1039         /* Ignore decoder stop command silently in encoder context */
1040         if (ctx->inst_type != CODA_INST_DECODER)
1041                 return 0;
1042
1043         /* Set the stream-end flag on this context */
1044         coda_bit_stream_end_flag(ctx);
1045         ctx->hold = false;
1046         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1047
1048         return 0;
1049 }
1050
1051 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1052 {
1053         struct coda_ctx *ctx = fh_to_ctx(fh);
1054         struct v4l2_fract *tpf;
1055
1056         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1057                 return -EINVAL;
1058
1059         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1060         tpf = &a->parm.output.timeperframe;
1061         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1062         tpf->numerator = 1 + (ctx->params.framerate >>
1063                               CODA_FRATE_DIV_OFFSET);
1064
1065         return 0;
1066 }
1067
1068 /*
1069  * Approximate timeperframe v4l2_fract with values that can be written
1070  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1071  */
1072 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1073 {
1074         struct v4l2_fract s = *timeperframe;
1075         struct v4l2_fract f0;
1076         struct v4l2_fract f1 = { 1, 0 };
1077         struct v4l2_fract f2 = { 0, 1 };
1078         unsigned int i, div, s_denominator;
1079
1080         /* Lower bound is 1/65535 */
1081         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1082                 timeperframe->numerator = 1;
1083                 timeperframe->denominator = 65535;
1084                 return;
1085         }
1086
1087         /* Upper bound is 65536/1, map everything above to infinity */
1088         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1089                 timeperframe->numerator = 1;
1090                 timeperframe->denominator = 0;
1091                 return;
1092         }
1093
1094         /* Reduce fraction to lowest terms */
1095         div = gcd(s.numerator, s.denominator);
1096         if (div > 1) {
1097                 s.numerator /= div;
1098                 s.denominator /= div;
1099         }
1100
1101         if (s.numerator <= 65536 && s.denominator < 65536) {
1102                 *timeperframe = s;
1103                 return;
1104         }
1105
1106         /* Find successive convergents from continued fraction expansion */
1107         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1108                 f0 = f1;
1109                 f1 = f2;
1110
1111                 /* Stop when f2 exactly equals timeperframe */
1112                 if (s.numerator == 0)
1113                         break;
1114
1115                 i = s.denominator / s.numerator;
1116
1117                 f2.numerator = f0.numerator + i * f1.numerator;
1118                 f2.denominator = f0.denominator + i * f2.denominator;
1119
1120                 s_denominator = s.numerator;
1121                 s.numerator = s.denominator % s.numerator;
1122                 s.denominator = s_denominator;
1123         }
1124
1125         *timeperframe = f1;
1126 }
1127
1128 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1129 {
1130         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1131                 timeperframe->denominator;
1132 }
1133
1134 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1135 {
1136         struct coda_ctx *ctx = fh_to_ctx(fh);
1137         struct v4l2_fract *tpf;
1138
1139         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1140                 return -EINVAL;
1141
1142         tpf = &a->parm.output.timeperframe;
1143         coda_approximate_timeperframe(tpf);
1144         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1145
1146         return 0;
1147 }
1148
1149 static int coda_subscribe_event(struct v4l2_fh *fh,
1150                                 const struct v4l2_event_subscription *sub)
1151 {
1152         switch (sub->type) {
1153         case V4L2_EVENT_EOS:
1154                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1155         default:
1156                 return v4l2_ctrl_subscribe_event(fh, sub);
1157         }
1158 }
1159
1160 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1161         .vidioc_querycap        = coda_querycap,
1162
1163         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1164         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1165         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1166         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1167
1168         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1169         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1170         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1171         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1172
1173         .vidioc_reqbufs         = coda_reqbufs,
1174         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1175
1176         .vidioc_qbuf            = coda_qbuf,
1177         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1178         .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
1179         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1180         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1181
1182         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1183         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1184
1185         .vidioc_g_selection     = coda_g_selection,
1186         .vidioc_s_selection     = coda_s_selection,
1187
1188         .vidioc_try_encoder_cmd = coda_try_encoder_cmd,
1189         .vidioc_encoder_cmd     = coda_encoder_cmd,
1190         .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
1191         .vidioc_decoder_cmd     = coda_decoder_cmd,
1192
1193         .vidioc_g_parm          = coda_g_parm,
1194         .vidioc_s_parm          = coda_s_parm,
1195
1196         .vidioc_subscribe_event = coda_subscribe_event,
1197         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1198 };
1199
1200 /*
1201  * Mem-to-mem operations.
1202  */
1203
1204 static void coda_device_run(void *m2m_priv)
1205 {
1206         struct coda_ctx *ctx = m2m_priv;
1207         struct coda_dev *dev = ctx->dev;
1208
1209         queue_work(dev->workqueue, &ctx->pic_run_work);
1210 }
1211
1212 static void coda_pic_run_work(struct work_struct *work)
1213 {
1214         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1215         struct coda_dev *dev = ctx->dev;
1216         int ret;
1217
1218         mutex_lock(&ctx->buffer_mutex);
1219         mutex_lock(&dev->coda_mutex);
1220
1221         ret = ctx->ops->prepare_run(ctx);
1222         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
1223                 mutex_unlock(&dev->coda_mutex);
1224                 mutex_unlock(&ctx->buffer_mutex);
1225                 /* job_finish scheduled by prepare_decode */
1226                 return;
1227         }
1228
1229         if (!wait_for_completion_timeout(&ctx->completion,
1230                                          msecs_to_jiffies(1000))) {
1231                 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
1232
1233                 ctx->hold = true;
1234
1235                 coda_hw_reset(ctx);
1236
1237                 if (ctx->ops->run_timeout)
1238                         ctx->ops->run_timeout(ctx);
1239         } else if (!ctx->aborting) {
1240                 ctx->ops->finish_run(ctx);
1241         }
1242
1243         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1244             ctx->ops->seq_end_work)
1245                 queue_work(dev->workqueue, &ctx->seq_end_work);
1246
1247         mutex_unlock(&dev->coda_mutex);
1248         mutex_unlock(&ctx->buffer_mutex);
1249
1250         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1251 }
1252
1253 static int coda_job_ready(void *m2m_priv)
1254 {
1255         struct coda_ctx *ctx = m2m_priv;
1256         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1257
1258         /*
1259          * For both 'P' and 'key' frame cases 1 picture
1260          * and 1 frame are needed. In the decoder case,
1261          * the compressed frame can be in the bitstream.
1262          */
1263         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1264                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1265                          "not ready: not enough video buffers.\n");
1266                 return 0;
1267         }
1268
1269         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1270                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1271                          "not ready: not enough video capture buffers.\n");
1272                 return 0;
1273         }
1274
1275         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1276                 bool stream_end = ctx->bit_stream_param &
1277                                   CODA_BIT_STREAM_END_FLAG;
1278                 int num_metas = ctx->num_metas;
1279                 unsigned int count;
1280
1281                 count = hweight32(ctx->frm_dis_flg);
1282                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1283                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1284                                  "%d: not ready: all internal buffers in use: %d/%d (0x%x)",
1285                                  ctx->idx, count, ctx->num_internal_frames,
1286                                  ctx->frm_dis_flg);
1287                         return 0;
1288                 }
1289
1290                 if (ctx->hold && !src_bufs) {
1291                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1292                                  "%d: not ready: on hold for more buffers.\n",
1293                                  ctx->idx);
1294                         return 0;
1295                 }
1296
1297                 if (!stream_end && (num_metas + src_bufs) < 2) {
1298                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1299                                  "%d: not ready: need 2 buffers available (%d, %d)\n",
1300                                  ctx->idx, num_metas, src_bufs);
1301                         return 0;
1302                 }
1303
1304
1305                 if (!src_bufs && !stream_end &&
1306                     (coda_get_bitstream_payload(ctx) < 512)) {
1307                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1308                                  "%d: not ready: not enough bitstream data (%d).\n",
1309                                  ctx->idx, coda_get_bitstream_payload(ctx));
1310                         return 0;
1311                 }
1312         }
1313
1314         if (ctx->aborting) {
1315                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1316                          "not ready: aborting\n");
1317                 return 0;
1318         }
1319
1320         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1321                         "job ready\n");
1322
1323         return 1;
1324 }
1325
1326 static void coda_job_abort(void *priv)
1327 {
1328         struct coda_ctx *ctx = priv;
1329
1330         ctx->aborting = 1;
1331
1332         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1333                  "Aborting task\n");
1334 }
1335
1336 static const struct v4l2_m2m_ops coda_m2m_ops = {
1337         .device_run     = coda_device_run,
1338         .job_ready      = coda_job_ready,
1339         .job_abort      = coda_job_abort,
1340 };
1341
1342 static void set_default_params(struct coda_ctx *ctx)
1343 {
1344         unsigned int max_w, max_h, usize, csize;
1345
1346         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1347                                      ctx->cvd->dst_formats[0]);
1348         max_w = min(ctx->codec->max_w, 1920U);
1349         max_h = min(ctx->codec->max_h, 1088U);
1350         usize = max_w * max_h * 3 / 2;
1351         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1352
1353         ctx->params.codec_mode = ctx->codec->mode;
1354         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1355                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1356         else
1357                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1358         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1359         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1360         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1361         ctx->params.framerate = 30;
1362
1363         /* Default formats for output and input queues */
1364         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1365         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1366         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1367         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1368         ctx->q_data[V4L2_M2M_DST].width = max_w;
1369         ctx->q_data[V4L2_M2M_DST].height = max_h;
1370         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1371                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1372                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1373                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1374                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1375         } else {
1376                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1377                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1378                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1379                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1380         }
1381         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1382         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1383         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1384         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1385
1386         /*
1387          * Since the RBC2AXI logic only supports a single chroma plane,
1388          * macroblock tiling only works for to NV12 pixel format.
1389          */
1390         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1391 }
1392
1393 /*
1394  * Queue operations
1395  */
1396 static int coda_queue_setup(struct vb2_queue *vq,
1397                                 unsigned int *nbuffers, unsigned int *nplanes,
1398                                 unsigned int sizes[], struct device *alloc_devs[])
1399 {
1400         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1401         struct coda_q_data *q_data;
1402         unsigned int size;
1403
1404         q_data = get_q_data(ctx, vq->type);
1405         size = q_data->sizeimage;
1406
1407         *nplanes = 1;
1408         sizes[0] = size;
1409
1410         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1411                  "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1412
1413         return 0;
1414 }
1415
1416 static int coda_buf_prepare(struct vb2_buffer *vb)
1417 {
1418         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1419         struct coda_q_data *q_data;
1420
1421         q_data = get_q_data(ctx, vb->vb2_queue->type);
1422
1423         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1424                 v4l2_warn(&ctx->dev->v4l2_dev,
1425                           "%s data will not fit into plane (%lu < %lu)\n",
1426                           __func__, vb2_plane_size(vb, 0),
1427                           (long)q_data->sizeimage);
1428                 return -EINVAL;
1429         }
1430
1431         return 0;
1432 }
1433
1434 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1435 {
1436         if (!ctrl)
1437                 return;
1438
1439         v4l2_ctrl_lock(ctrl);
1440
1441         /*
1442          * Extend the control range if the parsed stream contains a known but
1443          * unsupported value or level.
1444          */
1445         if (value > ctrl->maximum) {
1446                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1447                         ctrl->menu_skip_mask & ~(1 << value),
1448                         ctrl->default_value);
1449         } else if (value < ctrl->minimum) {
1450                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1451                         ctrl->menu_skip_mask & ~(1 << value),
1452                         ctrl->default_value);
1453         }
1454
1455         __v4l2_ctrl_s_ctrl(ctrl, value);
1456
1457         v4l2_ctrl_unlock(ctrl);
1458 }
1459
1460 static void coda_update_h264_profile_ctrl(struct coda_ctx *ctx)
1461 {
1462         const char * const *profile_names;
1463         int profile;
1464
1465         profile = coda_h264_profile(ctx->params.h264_profile_idc);
1466         if (profile < 0) {
1467                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid H264 Profile: %u\n",
1468                           ctx->params.h264_profile_idc);
1469                 return;
1470         }
1471
1472         coda_update_menu_ctrl(ctx->h264_profile_ctrl, profile);
1473
1474         profile_names = v4l2_ctrl_get_menu(V4L2_CID_MPEG_VIDEO_H264_PROFILE);
1475
1476         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "Parsed H264 Profile: %s\n",
1477                  profile_names[profile]);
1478 }
1479
1480 static void coda_update_h264_level_ctrl(struct coda_ctx *ctx)
1481 {
1482         const char * const *level_names;
1483         int level;
1484
1485         level = coda_h264_level(ctx->params.h264_level_idc);
1486         if (level < 0) {
1487                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid H264 Level: %u\n",
1488                           ctx->params.h264_level_idc);
1489                 return;
1490         }
1491
1492         coda_update_menu_ctrl(ctx->h264_level_ctrl, level);
1493
1494         level_names = v4l2_ctrl_get_menu(V4L2_CID_MPEG_VIDEO_H264_LEVEL);
1495
1496         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "Parsed H264 Level: %s\n",
1497                  level_names[level]);
1498 }
1499
1500 static void coda_buf_queue(struct vb2_buffer *vb)
1501 {
1502         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1503         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1504         struct vb2_queue *vq = vb->vb2_queue;
1505         struct coda_q_data *q_data;
1506
1507         q_data = get_q_data(ctx, vb->vb2_queue->type);
1508
1509         /*
1510          * In the decoder case, immediately try to copy the buffer into the
1511          * bitstream ringbuffer and mark it as ready to be dequeued.
1512          */
1513         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1514                 /*
1515                  * For backwards compatibility, queuing an empty buffer marks
1516                  * the stream end
1517                  */
1518                 if (vb2_get_plane_payload(vb, 0) == 0)
1519                         coda_bit_stream_end_flag(ctx);
1520
1521                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1522                         /*
1523                          * Unless already done, try to obtain profile_idc and
1524                          * level_idc from the SPS header. This allows to decide
1525                          * whether to enable reordering during sequence
1526                          * initialization.
1527                          */
1528                         if (!ctx->params.h264_profile_idc) {
1529                                 coda_sps_parse_profile(ctx, vb);
1530                                 coda_update_h264_profile_ctrl(ctx);
1531                                 coda_update_h264_level_ctrl(ctx);
1532                         }
1533                 }
1534
1535                 mutex_lock(&ctx->bitstream_mutex);
1536                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1537                 if (vb2_is_streaming(vb->vb2_queue))
1538                         /* This set buf->sequence = ctx->qsequence++ */
1539                         coda_fill_bitstream(ctx, NULL);
1540                 mutex_unlock(&ctx->bitstream_mutex);
1541         } else {
1542                 if (ctx->inst_type == CODA_INST_ENCODER &&
1543                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1544                         vbuf->sequence = ctx->qsequence++;
1545                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1546         }
1547 }
1548
1549 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1550                        size_t size, const char *name, struct dentry *parent)
1551 {
1552         buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1553                                         GFP_KERNEL);
1554         if (!buf->vaddr) {
1555                 v4l2_err(&dev->v4l2_dev,
1556                          "Failed to allocate %s buffer of size %zu\n",
1557                          name, size);
1558                 return -ENOMEM;
1559         }
1560
1561         buf->size = size;
1562
1563         if (name && parent) {
1564                 buf->blob.data = buf->vaddr;
1565                 buf->blob.size = size;
1566                 buf->dentry = debugfs_create_blob(name, 0644, parent,
1567                                                   &buf->blob);
1568                 if (!buf->dentry)
1569                         dev_warn(&dev->plat_dev->dev,
1570                                  "failed to create debugfs entry %s\n", name);
1571         }
1572
1573         return 0;
1574 }
1575
1576 void coda_free_aux_buf(struct coda_dev *dev,
1577                        struct coda_aux_buf *buf)
1578 {
1579         if (buf->vaddr) {
1580                 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1581                                   buf->vaddr, buf->paddr);
1582                 buf->vaddr = NULL;
1583                 buf->size = 0;
1584                 debugfs_remove(buf->dentry);
1585                 buf->dentry = NULL;
1586         }
1587 }
1588
1589 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1590 {
1591         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1592         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1593         struct coda_q_data *q_data_src, *q_data_dst;
1594         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1595         struct vb2_v4l2_buffer *buf;
1596         struct list_head list;
1597         int ret = 0;
1598
1599         if (count < 1)
1600                 return -EINVAL;
1601
1602         INIT_LIST_HEAD(&list);
1603
1604         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1605         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1606                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1607                         /* copy the buffers that were queued before streamon */
1608                         mutex_lock(&ctx->bitstream_mutex);
1609                         coda_fill_bitstream(ctx, &list);
1610                         mutex_unlock(&ctx->bitstream_mutex);
1611
1612                         if (coda_get_bitstream_payload(ctx) < 512) {
1613                                 ret = -EINVAL;
1614                                 goto err;
1615                         }
1616                 }
1617
1618                 ctx->streamon_out = 1;
1619         } else {
1620                 ctx->streamon_cap = 1;
1621         }
1622
1623         /* Don't start the coda unless both queues are on */
1624         if (!(ctx->streamon_out && ctx->streamon_cap))
1625                 goto out;
1626
1627         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1628         if ((q_data_src->rect.width != q_data_dst->width &&
1629              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
1630             (q_data_src->rect.height != q_data_dst->height &&
1631              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
1632                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1633                          q_data_src->rect.width, q_data_src->rect.height,
1634                          q_data_dst->width, q_data_dst->height);
1635                 ret = -EINVAL;
1636                 goto err;
1637         }
1638
1639         /* Allow BIT decoder device_run with no new buffers queued */
1640         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1641                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1642
1643         ctx->gopcounter = ctx->params.gop_size - 1;
1644
1645         ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1646                                      q_data_dst->fourcc);
1647         if (!ctx->codec) {
1648                 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1649                 ret = -EINVAL;
1650                 goto err;
1651         }
1652
1653         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1654                 ctx->params.gop_size = 1;
1655         ctx->gopcounter = ctx->params.gop_size - 1;
1656
1657         ret = ctx->ops->start_streaming(ctx);
1658         if (ctx->inst_type == CODA_INST_DECODER) {
1659                 if (ret == -EAGAIN)
1660                         goto out;
1661         }
1662         if (ret < 0)
1663                 goto err;
1664
1665 out:
1666         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1667                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1668                         list_del(&m2m_buf->list);
1669                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
1670                 }
1671         }
1672         return 0;
1673
1674 err:
1675         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1676                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1677                         list_del(&m2m_buf->list);
1678                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
1679                 }
1680                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1681                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1682         } else {
1683                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1684                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1685         }
1686         return ret;
1687 }
1688
1689 static void coda_stop_streaming(struct vb2_queue *q)
1690 {
1691         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1692         struct coda_dev *dev = ctx->dev;
1693         struct vb2_v4l2_buffer *buf;
1694         unsigned long flags;
1695         bool stop;
1696
1697         stop = ctx->streamon_out && ctx->streamon_cap;
1698
1699         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1700                 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1701                          "%s: output\n", __func__);
1702                 ctx->streamon_out = 0;
1703
1704                 coda_bit_stream_end_flag(ctx);
1705
1706                 ctx->qsequence = 0;
1707
1708                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1709                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1710         } else {
1711                 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1712                          "%s: capture\n", __func__);
1713                 ctx->streamon_cap = 0;
1714
1715                 ctx->osequence = 0;
1716                 ctx->sequence_offset = 0;
1717
1718                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1719                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1720         }
1721
1722         if (stop) {
1723                 struct coda_buffer_meta *meta;
1724
1725                 if (ctx->ops->seq_end_work) {
1726                         queue_work(dev->workqueue, &ctx->seq_end_work);
1727                         flush_work(&ctx->seq_end_work);
1728                 }
1729                 spin_lock_irqsave(&ctx->buffer_meta_lock, flags);
1730                 while (!list_empty(&ctx->buffer_meta_list)) {
1731                         meta = list_first_entry(&ctx->buffer_meta_list,
1732                                                 struct coda_buffer_meta, list);
1733                         list_del(&meta->list);
1734                         kfree(meta);
1735                 }
1736                 ctx->num_metas = 0;
1737                 spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags);
1738                 kfifo_init(&ctx->bitstream_fifo,
1739                         ctx->bitstream.vaddr, ctx->bitstream.size);
1740                 ctx->runcounter = 0;
1741                 ctx->aborting = 0;
1742                 ctx->hold = false;
1743         }
1744
1745         if (!ctx->streamon_out && !ctx->streamon_cap)
1746                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1747 }
1748
1749 static const struct vb2_ops coda_qops = {
1750         .queue_setup            = coda_queue_setup,
1751         .buf_prepare            = coda_buf_prepare,
1752         .buf_queue              = coda_buf_queue,
1753         .start_streaming        = coda_start_streaming,
1754         .stop_streaming         = coda_stop_streaming,
1755         .wait_prepare           = vb2_ops_wait_prepare,
1756         .wait_finish            = vb2_ops_wait_finish,
1757 };
1758
1759 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1760 {
1761         struct coda_ctx *ctx =
1762                         container_of(ctrl->handler, struct coda_ctx, ctrls);
1763
1764         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1765                  "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1766
1767         switch (ctrl->id) {
1768         case V4L2_CID_HFLIP:
1769                 if (ctrl->val)
1770                         ctx->params.rot_mode |= CODA_MIR_HOR;
1771                 else
1772                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
1773                 break;
1774         case V4L2_CID_VFLIP:
1775                 if (ctrl->val)
1776                         ctx->params.rot_mode |= CODA_MIR_VER;
1777                 else
1778                         ctx->params.rot_mode &= ~CODA_MIR_VER;
1779                 break;
1780         case V4L2_CID_MPEG_VIDEO_BITRATE:
1781                 ctx->params.bitrate = ctrl->val / 1000;
1782                 break;
1783         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1784                 ctx->params.gop_size = ctrl->val;
1785                 break;
1786         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1787                 ctx->params.h264_intra_qp = ctrl->val;
1788                 break;
1789         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1790                 ctx->params.h264_inter_qp = ctrl->val;
1791                 break;
1792         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1793                 ctx->params.h264_min_qp = ctrl->val;
1794                 break;
1795         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1796                 ctx->params.h264_max_qp = ctrl->val;
1797                 break;
1798         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1799                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
1800                 break;
1801         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1802                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
1803                 break;
1804         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1805                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
1806                 break;
1807         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
1808                 /* TODO: switch between baseline and constrained baseline */
1809                 if (ctx->inst_type == CODA_INST_ENCODER)
1810                         ctx->params.h264_profile_idc = 66;
1811                 break;
1812         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
1813                 /* nothing to do, this is set by the encoder */
1814                 break;
1815         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1816                 ctx->params.mpeg4_intra_qp = ctrl->val;
1817                 break;
1818         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1819                 ctx->params.mpeg4_inter_qp = ctrl->val;
1820                 break;
1821         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
1822         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
1823                 /* nothing to do, these are fixed */
1824                 break;
1825         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1826                 ctx->params.slice_mode = ctrl->val;
1827                 break;
1828         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1829                 ctx->params.slice_max_mb = ctrl->val;
1830                 break;
1831         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1832                 ctx->params.slice_max_bits = ctrl->val * 8;
1833                 break;
1834         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1835                 break;
1836         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1837                 ctx->params.intra_refresh = ctrl->val;
1838                 break;
1839         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
1840                 ctx->params.force_ipicture = true;
1841                 break;
1842         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1843                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1844                 break;
1845         case V4L2_CID_JPEG_RESTART_INTERVAL:
1846                 ctx->params.jpeg_restart_interval = ctrl->val;
1847                 break;
1848         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1849                 ctx->params.vbv_delay = ctrl->val;
1850                 break;
1851         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1852                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1853                 break;
1854         default:
1855                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1856                         "Invalid control, id=%d, val=%d\n",
1857                         ctrl->id, ctrl->val);
1858                 return -EINVAL;
1859         }
1860
1861         return 0;
1862 }
1863
1864 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1865         .s_ctrl = coda_s_ctrl,
1866 };
1867
1868 static void coda_encode_ctrls(struct coda_ctx *ctx)
1869 {
1870         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
1871
1872         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1873                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1874         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1875                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
1876         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1877                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1878         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1879                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1880         if (ctx->dev->devtype->product != CODA_960) {
1881                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1882                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1883         }
1884         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1885                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1886         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1887                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
1888         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1889                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
1890         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1891                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1892                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
1893                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1894         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1895                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
1896                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,
1897                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
1898         if (ctx->dev->devtype->product == CODA_HX4 ||
1899             ctx->dev->devtype->product == CODA_7541) {
1900                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1901                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
1902                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
1903                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1904                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1905                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
1906                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
1907         }
1908         if (ctx->dev->devtype->product == CODA_960) {
1909                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1910                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
1911                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
1912                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1913                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1914                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
1915                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
1916                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
1917                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
1918         }
1919         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1920                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1921         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1922                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1923         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1924                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
1925                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
1926                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
1927         if (ctx->dev->devtype->product == CODA_HX4 ||
1928             ctx->dev->devtype->product == CODA_7541 ||
1929             ctx->dev->devtype->product == CODA_960) {
1930                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1931                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
1932                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
1933                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
1934                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
1935         }
1936         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1937                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1938                 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1939                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1940         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1941                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1942         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1943                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1944                 500);
1945         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1946                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1947                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1948                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1949                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1950         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1951                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1952                 1920 * 1088 / 256, 1, 0);
1953         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1954                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
1955         /*
1956          * The maximum VBV size value is 0x7fffffff bits,
1957          * one bit less than 262144 KiB
1958          */
1959         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1960                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
1961 }
1962
1963 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1964 {
1965         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1966                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1967         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1968                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1969 }
1970
1971 static void coda_decode_ctrls(struct coda_ctx *ctx)
1972 {
1973         u64 mask;
1974         u8 max;
1975
1976         ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
1977                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
1978                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
1979                 ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
1980                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
1981                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
1982                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
1983         if (ctx->h264_profile_ctrl)
1984                 ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1985
1986         if (ctx->dev->devtype->product == CODA_HX4 ||
1987             ctx->dev->devtype->product == CODA_7541) {
1988                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
1989                 mask = ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1990                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1991                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
1992                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
1993                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0));
1994         } else if (ctx->dev->devtype->product == CODA_960) {
1995                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
1996                 mask = ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1997                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1998                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
1999                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2000                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
2001                          (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_1));
2002         } else {
2003                 return;
2004         }
2005         ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2006                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, mask,
2007                 max);
2008         if (ctx->h264_level_ctrl)
2009                 ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2010 }
2011
2012 static int coda_ctrls_setup(struct coda_ctx *ctx)
2013 {
2014         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2015
2016         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2017                 V4L2_CID_HFLIP, 0, 1, 1, 0);
2018         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2019                 V4L2_CID_VFLIP, 0, 1, 1, 0);
2020         if (ctx->inst_type == CODA_INST_ENCODER) {
2021                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2022                         coda_jpeg_encode_ctrls(ctx);
2023                 else
2024                         coda_encode_ctrls(ctx);
2025         } else {
2026                 if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2027                         coda_decode_ctrls(ctx);
2028         }
2029
2030         if (ctx->ctrls.error) {
2031                 v4l2_err(&ctx->dev->v4l2_dev,
2032                         "control initialization error (%d)",
2033                         ctx->ctrls.error);
2034                 return -EINVAL;
2035         }
2036
2037         return v4l2_ctrl_handler_setup(&ctx->ctrls);
2038 }
2039
2040 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2041 {
2042         vq->drv_priv = ctx;
2043         vq->ops = &coda_qops;
2044         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2045         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2046         vq->lock = &ctx->dev->dev_mutex;
2047         /* One way to indicate end-of-stream for coda is to set the
2048          * bytesused == 0. However by default videobuf2 handles bytesused
2049          * equal to 0 as a special case and changes its value to the size
2050          * of the buffer. Set the allow_zero_bytesused flag, so
2051          * that videobuf2 will keep the value of bytesused intact.
2052          */
2053         vq->allow_zero_bytesused = 1;
2054         /*
2055          * We might be fine with no buffers on some of the queues, but that
2056          * would need to be reflected in job_ready(). Currently we expect all
2057          * queues to have at least one buffer queued.
2058          */
2059         vq->min_buffers_needed = 1;
2060         vq->dev = &ctx->dev->plat_dev->dev;
2061
2062         return vb2_queue_init(vq);
2063 }
2064
2065 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2066                             struct vb2_queue *dst_vq)
2067 {
2068         int ret;
2069
2070         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2071         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2072         src_vq->mem_ops = &vb2_dma_contig_memops;
2073
2074         ret = coda_queue_init(priv, src_vq);
2075         if (ret)
2076                 return ret;
2077
2078         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2079         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2080         dst_vq->mem_ops = &vb2_dma_contig_memops;
2081
2082         return coda_queue_init(priv, dst_vq);
2083 }
2084
2085 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2086                             struct vb2_queue *dst_vq)
2087 {
2088         int ret;
2089
2090         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2091         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2092         src_vq->mem_ops = &vb2_vmalloc_memops;
2093
2094         ret = coda_queue_init(priv, src_vq);
2095         if (ret)
2096                 return ret;
2097
2098         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2099         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2100         dst_vq->mem_ops = &vb2_dma_contig_memops;
2101
2102         return coda_queue_init(priv, dst_vq);
2103 }
2104
2105 /*
2106  * File operations
2107  */
2108
2109 static int coda_open(struct file *file)
2110 {
2111         struct video_device *vdev = video_devdata(file);
2112         struct coda_dev *dev = video_get_drvdata(vdev);
2113         struct coda_ctx *ctx;
2114         unsigned int max = ~0;
2115         char *name;
2116         int ret;
2117         int idx;
2118
2119         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2120         if (!ctx)
2121                 return -ENOMEM;
2122
2123         if (dev->devtype->product == CODA_DX6)
2124                 max = CODADX6_MAX_INSTANCES - 1;
2125         idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2126         if (idx < 0) {
2127                 ret = idx;
2128                 goto err_coda_max;
2129         }
2130
2131         name = kasprintf(GFP_KERNEL, "context%d", idx);
2132         if (!name) {
2133                 ret = -ENOMEM;
2134                 goto err_coda_name_init;
2135         }
2136
2137         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2138         kfree(name);
2139
2140         ctx->cvd = to_coda_video_device(vdev);
2141         ctx->inst_type = ctx->cvd->type;
2142         ctx->ops = ctx->cvd->ops;
2143         ctx->use_bit = !ctx->cvd->direct;
2144         init_completion(&ctx->completion);
2145         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2146         if (ctx->ops->seq_end_work)
2147                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2148         v4l2_fh_init(&ctx->fh, video_devdata(file));
2149         file->private_data = &ctx->fh;
2150         v4l2_fh_add(&ctx->fh);
2151         ctx->dev = dev;
2152         ctx->idx = idx;
2153         switch (dev->devtype->product) {
2154         case CODA_960:
2155                 /*
2156                  * Enabling the BWB when decoding can hang the firmware with
2157                  * certain streams. The issue was tracked as ENGR00293425 by
2158                  * Freescale. As a workaround, disable BWB for all decoders.
2159                  * The enable_bwb module parameter allows to override this.
2160                  */
2161                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2162                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2163                 /* fallthrough */
2164         case CODA_HX4:
2165         case CODA_7541:
2166                 ctx->reg_idx = 0;
2167                 break;
2168         default:
2169                 ctx->reg_idx = idx;
2170         }
2171         if (ctx->dev->vdoa && !disable_vdoa) {
2172                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2173                 if (!ctx->vdoa)
2174                         v4l2_warn(&dev->v4l2_dev,
2175                                   "Failed to create vdoa context: not using vdoa");
2176         }
2177         ctx->use_vdoa = false;
2178
2179         /* Power up and upload firmware if necessary */
2180         ret = pm_runtime_get_sync(&dev->plat_dev->dev);
2181         if (ret < 0) {
2182                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2183                 goto err_pm_get;
2184         }
2185
2186         ret = clk_prepare_enable(dev->clk_per);
2187         if (ret)
2188                 goto err_clk_per;
2189
2190         ret = clk_prepare_enable(dev->clk_ahb);
2191         if (ret)
2192                 goto err_clk_ahb;
2193
2194         set_default_params(ctx);
2195         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2196                                             ctx->ops->queue_init);
2197         if (IS_ERR(ctx->fh.m2m_ctx)) {
2198                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2199
2200                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2201                          __func__, ret);
2202                 goto err_ctx_init;
2203         }
2204
2205         ret = coda_ctrls_setup(ctx);
2206         if (ret) {
2207                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2208                 goto err_ctrls_setup;
2209         }
2210
2211         ctx->fh.ctrl_handler = &ctx->ctrls;
2212
2213         mutex_init(&ctx->bitstream_mutex);
2214         mutex_init(&ctx->buffer_mutex);
2215         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2216         spin_lock_init(&ctx->buffer_meta_lock);
2217
2218         mutex_lock(&dev->dev_mutex);
2219         list_add(&ctx->list, &dev->instances);
2220         mutex_unlock(&dev->dev_mutex);
2221
2222         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
2223                  ctx->idx, ctx);
2224
2225         return 0;
2226
2227 err_ctrls_setup:
2228         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2229 err_ctx_init:
2230         clk_disable_unprepare(dev->clk_ahb);
2231 err_clk_ahb:
2232         clk_disable_unprepare(dev->clk_per);
2233 err_clk_per:
2234         pm_runtime_put_sync(&dev->plat_dev->dev);
2235 err_pm_get:
2236         v4l2_fh_del(&ctx->fh);
2237         v4l2_fh_exit(&ctx->fh);
2238 err_coda_name_init:
2239         ida_free(&dev->ida, ctx->idx);
2240 err_coda_max:
2241         kfree(ctx);
2242         return ret;
2243 }
2244
2245 static int coda_release(struct file *file)
2246 {
2247         struct coda_dev *dev = video_drvdata(file);
2248         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2249
2250         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
2251                  ctx);
2252
2253         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2254                 coda_bit_stream_end_flag(ctx);
2255
2256         /* If this instance is running, call .job_abort and wait for it to end */
2257         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2258
2259         if (ctx->vdoa)
2260                 vdoa_context_destroy(ctx->vdoa);
2261
2262         /* In case the instance was not running, we still need to call SEQ_END */
2263         if (ctx->ops->seq_end_work) {
2264                 queue_work(dev->workqueue, &ctx->seq_end_work);
2265                 flush_work(&ctx->seq_end_work);
2266         }
2267
2268         mutex_lock(&dev->dev_mutex);
2269         list_del(&ctx->list);
2270         mutex_unlock(&dev->dev_mutex);
2271
2272         if (ctx->dev->devtype->product == CODA_DX6)
2273                 coda_free_aux_buf(dev, &ctx->workbuf);
2274
2275         v4l2_ctrl_handler_free(&ctx->ctrls);
2276         clk_disable_unprepare(dev->clk_ahb);
2277         clk_disable_unprepare(dev->clk_per);
2278         pm_runtime_put_sync(&dev->plat_dev->dev);
2279         v4l2_fh_del(&ctx->fh);
2280         v4l2_fh_exit(&ctx->fh);
2281         ida_free(&dev->ida, ctx->idx);
2282         if (ctx->ops->release)
2283                 ctx->ops->release(ctx);
2284         debugfs_remove_recursive(ctx->debugfs_entry);
2285         kfree(ctx);
2286
2287         return 0;
2288 }
2289
2290 static const struct v4l2_file_operations coda_fops = {
2291         .owner          = THIS_MODULE,
2292         .open           = coda_open,
2293         .release        = coda_release,
2294         .poll           = v4l2_m2m_fop_poll,
2295         .unlocked_ioctl = video_ioctl2,
2296         .mmap           = v4l2_m2m_fop_mmap,
2297 };
2298
2299 static int coda_hw_init(struct coda_dev *dev)
2300 {
2301         u32 data;
2302         u16 *p;
2303         int i, ret;
2304
2305         ret = clk_prepare_enable(dev->clk_per);
2306         if (ret)
2307                 goto err_clk_per;
2308
2309         ret = clk_prepare_enable(dev->clk_ahb);
2310         if (ret)
2311                 goto err_clk_ahb;
2312
2313         reset_control_reset(dev->rstc);
2314
2315         /*
2316          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2317          * The 16-bit chars in the code buffer are in memory access
2318          * order, re-sort them to CODA order for register download.
2319          * Data in this SRAM survives a reboot.
2320          */
2321         p = (u16 *)dev->codebuf.vaddr;
2322         if (dev->devtype->product == CODA_DX6) {
2323                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2324                         data = CODA_DOWN_ADDRESS_SET(i) |
2325                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2326                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2327                 }
2328         } else {
2329                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2330                         data = CODA_DOWN_ADDRESS_SET(i) |
2331                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2332                                                         3 - (i % 4)]);
2333                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2334                 }
2335         }
2336
2337         /* Clear registers */
2338         for (i = 0; i < 64; i++)
2339                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2340
2341         /* Tell the BIT where to find everything it needs */
2342         if (dev->devtype->product == CODA_960 ||
2343             dev->devtype->product == CODA_7541 ||
2344             dev->devtype->product == CODA_HX4) {
2345                 coda_write(dev, dev->tempbuf.paddr,
2346                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2347                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2348         } else {
2349                 coda_write(dev, dev->workbuf.paddr,
2350                               CODA_REG_BIT_WORK_BUF_ADDR);
2351         }
2352         coda_write(dev, dev->codebuf.paddr,
2353                       CODA_REG_BIT_CODE_BUF_ADDR);
2354         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2355
2356         /* Set default values */
2357         switch (dev->devtype->product) {
2358         case CODA_DX6:
2359                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2360                            CODA_REG_BIT_STREAM_CTRL);
2361                 break;
2362         default:
2363                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2364                            CODA_REG_BIT_STREAM_CTRL);
2365         }
2366         if (dev->devtype->product == CODA_960)
2367                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2368                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2369         else
2370                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2371
2372         if (dev->devtype->product != CODA_DX6)
2373                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2374
2375         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2376                       CODA_REG_BIT_INT_ENABLE);
2377
2378         /* Reset VPU and start processor */
2379         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2380         data |= CODA_REG_RESET_ENABLE;
2381         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2382         udelay(10);
2383         data &= ~CODA_REG_RESET_ENABLE;
2384         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2385         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2386
2387         clk_disable_unprepare(dev->clk_ahb);
2388         clk_disable_unprepare(dev->clk_per);
2389
2390         return 0;
2391
2392 err_clk_ahb:
2393         clk_disable_unprepare(dev->clk_per);
2394 err_clk_per:
2395         return ret;
2396 }
2397
2398 static int coda_register_device(struct coda_dev *dev, int i)
2399 {
2400         struct video_device *vfd = &dev->vfd[i];
2401
2402         if (i >= dev->devtype->num_vdevs)
2403                 return -EINVAL;
2404
2405         strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2406         vfd->fops       = &coda_fops;
2407         vfd->ioctl_ops  = &coda_ioctl_ops;
2408         vfd->release    = video_device_release_empty,
2409         vfd->lock       = &dev->dev_mutex;
2410         vfd->v4l2_dev   = &dev->v4l2_dev;
2411         vfd->vfl_dir    = VFL_DIR_M2M;
2412         video_set_drvdata(vfd, dev);
2413
2414         /* Not applicable, use the selection API instead */
2415         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2416         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2417         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2418
2419         return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
2420 }
2421
2422 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2423                                size_t size)
2424 {
2425         u32 *src = (u32 *)buf;
2426
2427         /* Check if the firmware has a 16-byte Freescale header, skip it */
2428         if (buf[0] == 'M' && buf[1] == 'X')
2429                 src += 4;
2430         /*
2431          * Check whether the firmware is in native order or pre-reordered for
2432          * memory access. The first instruction opcode always is 0xe40e.
2433          */
2434         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2435                 u32 *dst = dev->codebuf.vaddr;
2436                 int i;
2437
2438                 /* Firmware in native order, reorder while copying */
2439                 if (dev->devtype->product == CODA_DX6) {
2440                         for (i = 0; i < (size - 16) / 4; i++)
2441                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2442                 } else {
2443                         for (i = 0; i < (size - 16) / 4; i += 2) {
2444                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2445                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2446                         }
2447                 }
2448         } else {
2449                 /* Copy the already reordered firmware image */
2450                 memcpy(dev->codebuf.vaddr, src, size);
2451         }
2452 }
2453
2454 static void coda_fw_callback(const struct firmware *fw, void *context);
2455
2456 static int coda_firmware_request(struct coda_dev *dev)
2457 {
2458         char *fw;
2459
2460         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2461                 return -EINVAL;
2462
2463         fw = dev->devtype->firmware[dev->firmware];
2464
2465         dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2466                 coda_product_name(dev->devtype->product));
2467
2468         return reject_firmware_nowait(THIS_MODULE, true, fw,
2469                                        &dev->plat_dev->dev, GFP_KERNEL, dev,
2470                                        coda_fw_callback);
2471 }
2472
2473 static void coda_fw_callback(const struct firmware *fw, void *context)
2474 {
2475         struct coda_dev *dev = context;
2476         struct platform_device *pdev = dev->plat_dev;
2477         int i, ret;
2478
2479         if (!fw) {
2480                 dev->firmware++;
2481                 ret = coda_firmware_request(dev);
2482                 if (ret < 0) {
2483                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2484                         goto put_pm;
2485                 }
2486                 return;
2487         }
2488         if (dev->firmware > 0) {
2489                 /*
2490                  * Since we can't suppress warnings for failed asynchronous
2491                  * firmware requests, report that the fallback firmware was
2492                  * found.
2493                  */
2494                 dev_info(&pdev->dev, "Using fallback firmware %s\n",
2495                          dev->devtype->firmware[dev->firmware]);
2496         }
2497
2498         /* allocate auxiliary per-device code buffer for the BIT processor */
2499         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2500                                  dev->debugfs_root);
2501         if (ret < 0)
2502                 goto put_pm;
2503
2504         coda_copy_firmware(dev, fw->data, fw->size);
2505         release_firmware(fw);
2506
2507         ret = coda_hw_init(dev);
2508         if (ret < 0) {
2509                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2510                 goto put_pm;
2511         }
2512
2513         ret = coda_check_firmware(dev);
2514         if (ret < 0)
2515                 goto put_pm;
2516
2517         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
2518         if (IS_ERR(dev->m2m_dev)) {
2519                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
2520                 goto put_pm;
2521         }
2522
2523         for (i = 0; i < dev->devtype->num_vdevs; i++) {
2524                 ret = coda_register_device(dev, i);
2525                 if (ret) {
2526                         v4l2_err(&dev->v4l2_dev,
2527                                  "Failed to register %s video device: %d\n",
2528                                  dev->devtype->vdevs[i]->name, ret);
2529                         goto rel_vfd;
2530                 }
2531         }
2532
2533         v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2534                   dev->vfd[0].num, dev->vfd[i - 1].num);
2535
2536         pm_runtime_put_sync(&pdev->dev);
2537         return;
2538
2539 rel_vfd:
2540         while (--i >= 0)
2541                 video_unregister_device(&dev->vfd[i]);
2542         v4l2_m2m_release(dev->m2m_dev);
2543 put_pm:
2544         pm_runtime_put_sync(&pdev->dev);
2545 }
2546
2547 enum coda_platform {
2548         CODA_IMX27,
2549         CODA_IMX51,
2550         CODA_IMX53,
2551         CODA_IMX6Q,
2552         CODA_IMX6DL,
2553 };
2554
2555 static const struct coda_devtype coda_devdata[] = {
2556         [CODA_IMX27] = {
2557                 .firmware     = {
2558                         "/*(DEBLOBBED)*/",
2559                         "/*(DEBLOBBED)*/",
2560                         "/*(DEBLOBBED)*/"
2561                 },
2562                 .product      = CODA_DX6,
2563                 .codecs       = codadx6_codecs,
2564                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
2565                 .vdevs        = codadx6_video_devices,
2566                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
2567                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2568                 .iram_size    = 0xb000,
2569         },
2570         [CODA_IMX51] = {
2571                 /*(DEBLOBBED)*/{
2572                         "/*(DEBLOBBED)*/",
2573                         "/*(DEBLOBBED)*/",
2574                         "/*(DEBLOBBED)*/"
2575                 },
2576                 .product      = CODA_HX4,
2577                 .codecs       = codahx4_codecs,
2578                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
2579                 .vdevs        = codahx4_video_devices,
2580                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
2581                 .workbuf_size = 128 * 1024,
2582                 .tempbuf_size = 304 * 1024,
2583                 .iram_size    = 0x14000,
2584         },
2585         [CODA_IMX53] = {
2586                 .firmware     = {
2587                         "/*(DEBLOBBED)*/",
2588                         "/*(DEBLOBBED)*/",
2589                         "/*(DEBLOBBED)*/"
2590                 },
2591                 .product      = CODA_7541,
2592                 .codecs       = coda7_codecs,
2593                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
2594                 .vdevs        = coda7_video_devices,
2595                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
2596                 .workbuf_size = 128 * 1024,
2597                 .tempbuf_size = 304 * 1024,
2598                 .iram_size    = 0x14000,
2599         },
2600         [CODA_IMX6Q] = {
2601                 .firmware     = {
2602                         "/*(DEBLOBBED)*/",
2603                         "/*(DEBLOBBED)*/",
2604                         "/*(DEBLOBBED)*/"
2605                 },
2606                 .product      = CODA_960,
2607                 .codecs       = coda9_codecs,
2608                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2609                 .vdevs        = coda9_video_devices,
2610                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2611                 .workbuf_size = 80 * 1024,
2612                 .tempbuf_size = 204 * 1024,
2613                 .iram_size    = 0x21000,
2614         },
2615         [CODA_IMX6DL] = {
2616                 .firmware     = {
2617                         "/*(DEBLOBBED)*/",
2618                         "/*(DEBLOBBED)*/",
2619                         "/*(DEBLOBBED)*/"
2620                 },
2621                 .product      = CODA_960,
2622                 .codecs       = coda9_codecs,
2623                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2624                 .vdevs        = coda9_video_devices,
2625                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2626                 .workbuf_size = 80 * 1024,
2627                 .tempbuf_size = 204 * 1024,
2628                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
2629         },
2630 };
2631
2632 static const struct platform_device_id coda_platform_ids[] = {
2633         { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2634         { /* sentinel */ }
2635 };
2636 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2637
2638 #ifdef CONFIG_OF
2639 static const struct of_device_id coda_dt_ids[] = {
2640         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2641         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
2642         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2643         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2644         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2645         { /* sentinel */ }
2646 };
2647 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2648 #endif
2649
2650 static int coda_probe(struct platform_device *pdev)
2651 {
2652         const struct of_device_id *of_id =
2653                         of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2654         const struct platform_device_id *pdev_id;
2655         struct coda_platform_data *pdata = pdev->dev.platform_data;
2656         struct device_node *np = pdev->dev.of_node;
2657         struct gen_pool *pool;
2658         struct coda_dev *dev;
2659         struct resource *res;
2660         int ret, irq;
2661
2662         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2663         if (!dev)
2664                 return -ENOMEM;
2665
2666         pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2667
2668         if (of_id)
2669                 dev->devtype = of_id->data;
2670         else if (pdev_id)
2671                 dev->devtype = &coda_devdata[pdev_id->driver_data];
2672         else
2673                 return -EINVAL;
2674
2675         spin_lock_init(&dev->irqlock);
2676         INIT_LIST_HEAD(&dev->instances);
2677
2678         dev->plat_dev = pdev;
2679         dev->clk_per = devm_clk_get(&pdev->dev, "per");
2680         if (IS_ERR(dev->clk_per)) {
2681                 dev_err(&pdev->dev, "Could not get per clock\n");
2682                 return PTR_ERR(dev->clk_per);
2683         }
2684
2685         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2686         if (IS_ERR(dev->clk_ahb)) {
2687                 dev_err(&pdev->dev, "Could not get ahb clock\n");
2688                 return PTR_ERR(dev->clk_ahb);
2689         }
2690
2691         /* Get  memory for physical registers */
2692         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2693         dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2694         if (IS_ERR(dev->regs_base))
2695                 return PTR_ERR(dev->regs_base);
2696
2697         /* IRQ */
2698         irq = platform_get_irq_byname(pdev, "bit");
2699         if (irq < 0)
2700                 irq = platform_get_irq(pdev, 0);
2701         if (irq < 0) {
2702                 dev_err(&pdev->dev, "failed to get irq resource\n");
2703                 return irq;
2704         }
2705
2706         ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2707                         IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2708         if (ret < 0) {
2709                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2710                 return ret;
2711         }
2712
2713         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
2714                                                               NULL);
2715         if (IS_ERR(dev->rstc)) {
2716                 ret = PTR_ERR(dev->rstc);
2717                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
2718                 return ret;
2719         }
2720
2721         /* Get IRAM pool from device tree or platform data */
2722         pool = of_gen_pool_get(np, "iram", 0);
2723         if (!pool && pdata)
2724                 pool = gen_pool_get(pdata->iram_dev, NULL);
2725         if (!pool) {
2726                 dev_err(&pdev->dev, "iram pool not available\n");
2727                 return -ENOMEM;
2728         }
2729         dev->iram_pool = pool;
2730
2731         /* Get vdoa_data if supported by the platform */
2732         dev->vdoa = coda_get_vdoa_data();
2733         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
2734                 return -EPROBE_DEFER;
2735
2736         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2737         if (ret)
2738                 return ret;
2739
2740         mutex_init(&dev->dev_mutex);
2741         mutex_init(&dev->coda_mutex);
2742         ida_init(&dev->ida);
2743
2744         dev->debugfs_root = debugfs_create_dir("coda", NULL);
2745         if (!dev->debugfs_root)
2746                 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2747
2748         /* allocate auxiliary per-device buffers for the BIT processor */
2749         if (dev->devtype->product == CODA_DX6) {
2750                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2751                                          dev->devtype->workbuf_size, "workbuf",
2752                                          dev->debugfs_root);
2753                 if (ret < 0)
2754                         goto err_v4l2_register;
2755         }
2756
2757         if (dev->devtype->tempbuf_size) {
2758                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2759                                          dev->devtype->tempbuf_size, "tempbuf",
2760                                          dev->debugfs_root);
2761                 if (ret < 0)
2762                         goto err_v4l2_register;
2763         }
2764
2765         dev->iram.size = dev->devtype->iram_size;
2766         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2767                                              &dev->iram.paddr);
2768         if (!dev->iram.vaddr) {
2769                 dev_warn(&pdev->dev, "unable to alloc iram\n");
2770         } else {
2771                 memset(dev->iram.vaddr, 0, dev->iram.size);
2772                 dev->iram.blob.data = dev->iram.vaddr;
2773                 dev->iram.blob.size = dev->iram.size;
2774                 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2775                                                        dev->debugfs_root,
2776                                                        &dev->iram.blob);
2777         }
2778
2779         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2780         if (!dev->workqueue) {
2781                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2782                 ret = -ENOMEM;
2783                 goto err_v4l2_register;
2784         }
2785
2786         platform_set_drvdata(pdev, dev);
2787
2788         /*
2789          * Start activated so we can directly call coda_hw_init in
2790          * coda_fw_callback regardless of whether CONFIG_PM is
2791          * enabled or whether the device is associated with a PM domain.
2792          */
2793         pm_runtime_get_noresume(&pdev->dev);
2794         pm_runtime_set_active(&pdev->dev);
2795         pm_runtime_enable(&pdev->dev);
2796
2797         ret = coda_firmware_request(dev);
2798         if (ret)
2799                 goto err_alloc_workqueue;
2800         return 0;
2801
2802 err_alloc_workqueue:
2803         destroy_workqueue(dev->workqueue);
2804 err_v4l2_register:
2805         v4l2_device_unregister(&dev->v4l2_dev);
2806         return ret;
2807 }
2808
2809 static int coda_remove(struct platform_device *pdev)
2810 {
2811         struct coda_dev *dev = platform_get_drvdata(pdev);
2812         int i;
2813
2814         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2815                 if (video_get_drvdata(&dev->vfd[i]))
2816                         video_unregister_device(&dev->vfd[i]);
2817         }
2818         if (dev->m2m_dev)
2819                 v4l2_m2m_release(dev->m2m_dev);
2820         pm_runtime_disable(&pdev->dev);
2821         v4l2_device_unregister(&dev->v4l2_dev);
2822         destroy_workqueue(dev->workqueue);
2823         if (dev->iram.vaddr)
2824                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2825                               dev->iram.size);
2826         coda_free_aux_buf(dev, &dev->codebuf);
2827         coda_free_aux_buf(dev, &dev->tempbuf);
2828         coda_free_aux_buf(dev, &dev->workbuf);
2829         debugfs_remove_recursive(dev->debugfs_root);
2830         ida_destroy(&dev->ida);
2831         return 0;
2832 }
2833
2834 #ifdef CONFIG_PM
2835 static int coda_runtime_resume(struct device *dev)
2836 {
2837         struct coda_dev *cdev = dev_get_drvdata(dev);
2838         int ret = 0;
2839
2840         if (dev->pm_domain && cdev->codebuf.vaddr) {
2841                 ret = coda_hw_init(cdev);
2842                 if (ret)
2843                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2844         }
2845
2846         return ret;
2847 }
2848 #endif
2849
2850 static const struct dev_pm_ops coda_pm_ops = {
2851         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2852 };
2853
2854 static struct platform_driver coda_driver = {
2855         .probe  = coda_probe,
2856         .remove = coda_remove,
2857         .driver = {
2858                 .name   = CODA_NAME,
2859                 .of_match_table = of_match_ptr(coda_dt_ids),
2860                 .pm     = &coda_pm_ops,
2861         },
2862         .id_table = coda_platform_ids,
2863 };
2864
2865 module_platform_driver(coda_driver);
2866
2867 MODULE_LICENSE("GPL");
2868 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2869 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");