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/interrupt.h>
  21 #include <linux/io.h>
  22 #include <linux/irq.h>
  23 #include <linux/kfifo.h>
  24 #include <linux/module.h>
  25 #include <linux/of_device.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/pm_runtime.h>
  28 #include <linux/slab.h>
  29 #include <linux/videodev2.h>
  30 #include <linux/of.h>
  31 #include <linux/platform_data/media/coda.h>
  32 #include <linux/reset.h>
  33
  34 #include <media/v4l2-ctrls.h>
  35 #include <media/v4l2-device.h>
  36 #include <media/v4l2-event.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-mem2mem.h>
  39 #include <media/videobuf2-v4l2.h>
  40 #include <media/videobuf2-dma-contig.h>
  41 #include <media/videobuf2-vmalloc.h>
  42
  43 #include "coda.h"
  44 #include "imx-vdoa.h"
  45
  46 #define CODA_NAME               "coda"
  47
  48 #define CODADX6_MAX_INSTANCES   4
  49 #define CODA_MAX_FORMATS        4
  50
  51 #define CODA_ISRAM_SIZE (2048 * 2)
  52
  53 #define MIN_W 176
  54 #define MIN_H 144
  55
  56 #define S_ALIGN         1 /* multiple of 2 */
  57 #define W_ALIGN         1 /* multiple of 2 */
  58 #define H_ALIGN         1 /* multiple of 2 */
  59
  60 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  61
  62 int coda_debug;
  63 module_param(coda_debug, int, 0644);
  64 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
  65
  66 static int disable_tiling;
  67 module_param(disable_tiling, int, 0644);
  68 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
  69
  70 static int disable_vdoa;
  71 module_param(disable_vdoa, int, 0644);
  72 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
  73
  74 static int enable_bwb = 0;
  75 module_param(enable_bwb, int, 0644);
  76 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
  77
  78 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
  79 {
  80         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  81                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  82         writel(data, dev->regs_base + reg);
  83 }
  84
  85 unsigned int coda_read(struct coda_dev *dev, u32 reg)
  86 {
  87         u32 data;
  88
  89         data = readl(dev->regs_base + reg);
  90         v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
  91                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  92         return data;
  93 }
  94
  95 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
  96                      struct vb2_v4l2_buffer *buf, unsigned int reg_y)
  97 {
  98         u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
  99         u32 base_cb, base_cr;
 100
 101         switch (q_data->fourcc) {
 102         case V4L2_PIX_FMT_YUYV:
 103                 /* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
 104         case V4L2_PIX_FMT_NV12:
 105         case V4L2_PIX_FMT_YUV420:
 106         default:
 107                 base_cb = base_y + q_data->bytesperline * q_data->height;
 108                 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
 109                 break;
 110         case V4L2_PIX_FMT_YVU420:
 111                 /* Switch Cb and Cr for YVU420 format */
 112                 base_cr = base_y + q_data->bytesperline * q_data->height;
 113                 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
 114                 break;
 115         case V4L2_PIX_FMT_YUV422P:
 116                 base_cb = base_y + q_data->bytesperline * q_data->height;
 117                 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
 118         }
 119
 120         coda_write(ctx->dev, base_y, reg_y);
 121         coda_write(ctx->dev, base_cb, reg_y + 4);
 122         coda_write(ctx->dev, base_cr, reg_y + 8);
 123 }
 124
 125 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
 126         { mode, src_fourcc, dst_fourcc, max_w, max_h }
 127
 128 /*
 129  * Arrays of codecs supported by each given version of Coda:
 130  *  i.MX27 -> codadx6
 131  *  i.MX5x -> coda7
 132  *  i.MX6  -> coda960
 133  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
 134  */
 135 static const struct coda_codec codadx6_codecs[] = {
 136         CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
 137         CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
 138 };
 139
 140 static const struct coda_codec coda7_codecs[] = {
 141         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
 142         CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
 143         CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 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, 1920, 1088),
 147         CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 148 };
 149
 150 static const struct coda_codec coda9_codecs[] = {
 151         CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
 152         CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
 153         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 154         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 155         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 156 };
 157
 158 struct coda_video_device {
 159         const char *name;
 160         enum coda_inst_type type;
 161         const struct coda_context_ops *ops;
 162         bool direct;
 163         u32 src_formats[CODA_MAX_FORMATS];
 164         u32 dst_formats[CODA_MAX_FORMATS];
 165 };
 166
 167 static const struct coda_video_device coda_bit_encoder = {
 168         .name = "coda-encoder",
 169         .type = CODA_INST_ENCODER,
 170         .ops = &coda_bit_encode_ops,
 171         .src_formats = {
 172                 V4L2_PIX_FMT_NV12,
 173                 V4L2_PIX_FMT_YUV420,
 174                 V4L2_PIX_FMT_YVU420,
 175         },
 176         .dst_formats = {
 177                 V4L2_PIX_FMT_H264,
 178                 V4L2_PIX_FMT_MPEG4,
 179         },
 180 };
 181
 182 static const struct coda_video_device coda_bit_jpeg_encoder = {
 183         .name = "coda-jpeg-encoder",
 184         .type = CODA_INST_ENCODER,
 185         .ops = &coda_bit_encode_ops,
 186         .src_formats = {
 187                 V4L2_PIX_FMT_NV12,
 188                 V4L2_PIX_FMT_YUV420,
 189                 V4L2_PIX_FMT_YVU420,
 190                 V4L2_PIX_FMT_YUV422P,
 191         },
 192         .dst_formats = {
 193                 V4L2_PIX_FMT_JPEG,
 194         },
 195 };
 196
 197 static const struct coda_video_device coda_bit_decoder = {
 198         .name = "coda-decoder",
 199         .type = CODA_INST_DECODER,
 200         .ops = &coda_bit_decode_ops,
 201         .src_formats = {
 202                 V4L2_PIX_FMT_H264,
 203                 V4L2_PIX_FMT_MPEG2,
 204                 V4L2_PIX_FMT_MPEG4,
 205         },
 206         .dst_formats = {
 207                 V4L2_PIX_FMT_NV12,
 208                 V4L2_PIX_FMT_YUV420,
 209                 V4L2_PIX_FMT_YVU420,
 210                 /*
 211                  * If V4L2_PIX_FMT_YUYV should be default,
 212                  * set_default_params() must be adjusted.
 213                  */
 214                 V4L2_PIX_FMT_YUYV,
 215         },
 216 };
 217
 218 static const struct coda_video_device coda_bit_jpeg_decoder = {
 219         .name = "coda-jpeg-decoder",
 220         .type = CODA_INST_DECODER,
 221         .ops = &coda_bit_decode_ops,
 222         .src_formats = {
 223                 V4L2_PIX_FMT_JPEG,
 224         },
 225         .dst_formats = {
 226                 V4L2_PIX_FMT_NV12,
 227                 V4L2_PIX_FMT_YUV420,
 228                 V4L2_PIX_FMT_YVU420,
 229                 V4L2_PIX_FMT_YUV422P,
 230         },
 231 };
 232
 233 static const struct coda_video_device *codadx6_video_devices[] = {
 234         &coda_bit_encoder,
 235 };
 236
 237 static const struct coda_video_device *coda7_video_devices[] = {
 238         &coda_bit_jpeg_encoder,
 239         &coda_bit_jpeg_decoder,
 240         &coda_bit_encoder,
 241         &coda_bit_decoder,
 242 };
 243
 244 static const struct coda_video_device *coda9_video_devices[] = {
 245         &coda_bit_encoder,
 246         &coda_bit_decoder,
 247 };
 248
 249 /*
 250  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 251  * tables.
 252  */
 253 static u32 coda_format_normalize_yuv(u32 fourcc)
 254 {
 255         switch (fourcc) {
 256         case V4L2_PIX_FMT_NV12:
 257         case V4L2_PIX_FMT_YUV420:
 258         case V4L2_PIX_FMT_YVU420:
 259         case V4L2_PIX_FMT_YUV422P:
 260         case V4L2_PIX_FMT_YUYV:
 261                 return V4L2_PIX_FMT_YUV420;
 262         default:
 263                 return fourcc;
 264         }
 265 }
 266
 267 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 268                                                 int src_fourcc, int dst_fourcc)
 269 {
 270         const struct coda_codec *codecs = dev->devtype->codecs;
 271         int num_codecs = dev->devtype->num_codecs;
 272         int k;
 273
 274         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 275         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 276         if (src_fourcc == dst_fourcc)
 277                 return NULL;
 278
 279         for (k = 0; k < num_codecs; k++) {
 280                 if (codecs[k].src_fourcc == src_fourcc &&
 281                     codecs[k].dst_fourcc == dst_fourcc)
 282                         break;
 283         }
 284
 285         if (k == num_codecs)
 286                 return NULL;
 287
 288         return &codecs[k];
 289 }
 290
 291 static void coda_get_max_dimensions(struct coda_dev *dev,
 292                                     const struct coda_codec *codec,
 293                                     int *max_w, int *max_h)
 294 {
 295         const struct coda_codec *codecs = dev->devtype->codecs;
 296         int num_codecs = dev->devtype->num_codecs;
 297         unsigned int w, h;
 298         int k;
 299
 300         if (codec) {
 301                 w = codec->max_w;
 302                 h = codec->max_h;
 303         } else {
 304                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 305                         w = max(w, codecs[k].max_w);
 306                         h = max(h, codecs[k].max_h);
 307                 }
 308         }
 309
 310         if (max_w)
 311                 *max_w = w;
 312         if (max_h)
 313                 *max_h = h;
 314 }
 315
 316 static const struct coda_video_device *to_coda_video_device(struct video_device
 317                                                             *vdev)
 318 {
 319         struct coda_dev *dev = video_get_drvdata(vdev);
 320         unsigned int i = vdev - dev->vfd;
 321
 322         if (i >= dev->devtype->num_vdevs)
 323                 return NULL;
 324
 325         return dev->devtype->vdevs[i];
 326 }
 327
 328 const char *coda_product_name(int product)
 329 {
 330         static char buf[9];
 331
 332         switch (product) {
 333         case CODA_DX6:
 334                 return "CodaDx6";
 335         case CODA_7541:
 336                 return "CODA7541";
 337         case CODA_960:
 338                 return "CODA960";
 339         default:
 340                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 341                 return buf;
 342         }
 343 }
 344
 345 static struct vdoa_data *coda_get_vdoa_data(void)
 346 {
 347         struct device_node *vdoa_node;
 348         struct platform_device *vdoa_pdev;
 349         struct vdoa_data *vdoa_data = NULL;
 350
 351         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 352         if (!vdoa_node)
 353                 return NULL;
 354
 355         vdoa_pdev = of_find_device_by_node(vdoa_node);
 356         if (!vdoa_pdev)
 357                 goto out;
 358
 359         vdoa_data = platform_get_drvdata(vdoa_pdev);
 360         if (!vdoa_data)
 361                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 362
 363 out:
 364         if (vdoa_node)
 365                 of_node_put(vdoa_node);
 366
 367         return vdoa_data;
 368 }
 369
 370 /*
 371  * V4L2 ioctl() operations.
 372  */
 373 static int coda_querycap(struct file *file, void *priv,
 374                          struct v4l2_capability *cap)
 375 {
 376         struct coda_ctx *ctx = fh_to_ctx(priv);
 377
 378         strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 379         strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 380                 sizeof(cap->card));
 381         strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 382         cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 383         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 384
 385         return 0;
 386 }
 387
 388 static int coda_enum_fmt(struct file *file, void *priv,
 389                          struct v4l2_fmtdesc *f)
 390 {
 391         struct video_device *vdev = video_devdata(file);
 392         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 393         struct coda_ctx *ctx = fh_to_ctx(priv);
 394         const u32 *formats;
 395
 396         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 397                 formats = cvd->src_formats;
 398         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 399                 formats = cvd->dst_formats;
 400         else
 401                 return -EINVAL;
 402
 403         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 404                 return -EINVAL;
 405
 406         /* Skip YUYV if the vdoa is not available */
 407         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 408             formats[f->index] == V4L2_PIX_FMT_YUYV)
 409                 return -EINVAL;
 410
 411         f->pixelformat = formats[f->index];
 412
 413         return 0;
 414 }
 415
 416 static int coda_g_fmt(struct file *file, void *priv,
 417                       struct v4l2_format *f)
 418 {
 419         struct coda_q_data *q_data;
 420         struct coda_ctx *ctx = fh_to_ctx(priv);
 421
 422         q_data = get_q_data(ctx, f->type);
 423         if (!q_data)
 424                 return -EINVAL;
 425
 426         f->fmt.pix.field        = V4L2_FIELD_NONE;
 427         f->fmt.pix.pixelformat  = q_data->fourcc;
 428         f->fmt.pix.width        = q_data->width;
 429         f->fmt.pix.height       = q_data->height;
 430         f->fmt.pix.bytesperline = q_data->bytesperline;
 431
 432         f->fmt.pix.sizeimage    = q_data->sizeimage;
 433         f->fmt.pix.colorspace   = ctx->colorspace;
 434         f->fmt.pix.xfer_func    = ctx->xfer_func;
 435         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 436         f->fmt.pix.quantization = ctx->quantization;
 437
 438         return 0;
 439 }
 440
 441 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 442 {
 443         struct coda_q_data *q_data;
 444         const u32 *formats;
 445         int i;
 446
 447         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 448                 formats = ctx->cvd->src_formats;
 449         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 450                 formats = ctx->cvd->dst_formats;
 451         else
 452                 return -EINVAL;
 453
 454         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 455                 /* Skip YUYV if the vdoa is not available */
 456                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 457                     formats[i] == V4L2_PIX_FMT_YUYV)
 458                         continue;
 459
 460                 if (formats[i] == f->fmt.pix.pixelformat) {
 461                         f->fmt.pix.pixelformat = formats[i];
 462                         return 0;
 463                 }
 464         }
 465
 466         /* Fall back to currently set pixelformat */
 467         q_data = get_q_data(ctx, f->type);
 468         f->fmt.pix.pixelformat = q_data->fourcc;
 469
 470         return 0;
 471 }
 472
 473 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 474                              bool *use_vdoa)
 475 {
 476         int err;
 477
 478         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 479                 return -EINVAL;
 480
 481         if (!use_vdoa)
 482                 return -EINVAL;
 483
 484         if (!ctx->vdoa) {
 485                 *use_vdoa = false;
 486                 return 0;
 487         }
 488
 489         err = vdoa_context_configure(NULL, f->fmt.pix.width, f->fmt.pix.height,
 490                                      f->fmt.pix.pixelformat);
 491         if (err) {
 492                 *use_vdoa = false;
 493                 return 0;
 494         }
 495
 496         *use_vdoa = true;
 497         return 0;
 498 }
 499
 500 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 501                                             u32 width, u32 height)
 502 {
 503         /*
 504          * This is a rough estimate for sensible compressed buffer
 505          * sizes (between 1 and 16 bits per pixel). This could be
 506          * improved by better format specific worst case estimates.
 507          */
 508         return round_up(clamp(sizeimage, width * height / 8,
 509                                          width * height * 2), PAGE_SIZE);
 510 }
 511
 512 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 513                         struct v4l2_format *f)
 514 {
 515         struct coda_dev *dev = ctx->dev;
 516         unsigned int max_w, max_h;
 517         enum v4l2_field field;
 518
 519         field = f->fmt.pix.field;
 520         if (field == V4L2_FIELD_ANY)
 521                 field = V4L2_FIELD_NONE;
 522         else if (V4L2_FIELD_NONE != field)
 523                 return -EINVAL;
 524
 525         /* V4L2 specification suggests the driver corrects the format struct
 526          * if any of the dimensions is unsupported */
 527         f->fmt.pix.field = field;
 528
 529         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 530         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 531                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 532                               S_ALIGN);
 533
 534         switch (f->fmt.pix.pixelformat) {
 535         case V4L2_PIX_FMT_NV12:
 536         case V4L2_PIX_FMT_YUV420:
 537         case V4L2_PIX_FMT_YVU420:
 538                 /*
 539                  * Frame stride must be at least multiple of 8,
 540                  * but multiple of 16 for h.264 or JPEG 4:2:x
 541                  */
 542                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 543                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 544                                         f->fmt.pix.height * 3 / 2;
 545                 break;
 546         case V4L2_PIX_FMT_YUYV:
 547                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 548                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 549                                         f->fmt.pix.height;
 550                 break;
 551         case V4L2_PIX_FMT_YUV422P:
 552                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 553                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 554                                         f->fmt.pix.height * 2;
 555                 break;
 556         case V4L2_PIX_FMT_JPEG:
 557                 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
 558                 /* fallthrough */
 559         case V4L2_PIX_FMT_H264:
 560         case V4L2_PIX_FMT_MPEG4:
 561         case V4L2_PIX_FMT_MPEG2:
 562                 f->fmt.pix.bytesperline = 0;
 563                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 564                                                         f->fmt.pix.sizeimage,
 565                                                         f->fmt.pix.width,
 566                                                         f->fmt.pix.height);
 567                 break;
 568         default:
 569                 BUG();
 570         }
 571
 572         return 0;
 573 }
 574
 575 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 576                                 struct v4l2_format *f)
 577 {
 578         struct coda_ctx *ctx = fh_to_ctx(priv);
 579         const struct coda_q_data *q_data_src;
 580         const struct coda_codec *codec;
 581         struct vb2_queue *src_vq;
 582         int ret;
 583         bool use_vdoa;
 584
 585         ret = coda_try_pixelformat(ctx, f);
 586         if (ret < 0)
 587                 return ret;
 588
 589         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 590
 591         /*
 592          * If the source format is already fixed, only allow the same output
 593          * resolution
 594          */
 595         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 596         if (vb2_is_streaming(src_vq)) {
 597                 f->fmt.pix.width = q_data_src->width;
 598                 f->fmt.pix.height = q_data_src->height;
 599         }
 600
 601         f->fmt.pix.colorspace = ctx->colorspace;
 602         f->fmt.pix.xfer_func = ctx->xfer_func;
 603         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 604         f->fmt.pix.quantization = ctx->quantization;
 605
 606         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 607         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 608                                 f->fmt.pix.pixelformat);
 609         if (!codec)
 610                 return -EINVAL;
 611
 612         ret = coda_try_fmt(ctx, codec, f);
 613         if (ret < 0)
 614                 return ret;
 615
 616         /* The h.264 decoder only returns complete 16x16 macroblocks */
 617         if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
 618                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
 619                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 620                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 621                                        f->fmt.pix.height * 3 / 2;
 622
 623                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 624                 if (ret < 0)
 625                         return ret;
 626
 627                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 628                         if (!use_vdoa)
 629                                 return -EINVAL;
 630
 631                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 632                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 633                                 f->fmt.pix.height;
 634                 }
 635         }
 636
 637         return 0;
 638 }
 639
 640 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 641 {
 642         enum v4l2_colorspace colorspace;
 643
 644         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 645                 colorspace = V4L2_COLORSPACE_JPEG;
 646         else if (fmt->width <= 720 && fmt->height <= 576)
 647                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 648         else
 649                 colorspace = V4L2_COLORSPACE_REC709;
 650
 651         fmt->colorspace = colorspace;
 652         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 653         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 654         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 655 }
 656
 657 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 658                                 struct v4l2_format *f)
 659 {
 660         struct coda_ctx *ctx = fh_to_ctx(priv);
 661         struct coda_dev *dev = ctx->dev;
 662         const struct coda_q_data *q_data_dst;
 663         const struct coda_codec *codec;
 664         int ret;
 665
 666         ret = coda_try_pixelformat(ctx, f);
 667         if (ret < 0)
 668                 return ret;
 669
 670         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 671                 coda_set_default_colorspace(&f->fmt.pix);
 672
 673         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 674         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 675
 676         return coda_try_fmt(ctx, codec, f);
 677 }
 678
 679 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 680                       struct v4l2_rect *r)
 681 {
 682         struct coda_q_data *q_data;
 683         struct vb2_queue *vq;
 684
 685         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 686         if (!vq)
 687                 return -EINVAL;
 688
 689         q_data = get_q_data(ctx, f->type);
 690         if (!q_data)
 691                 return -EINVAL;
 692
 693         if (vb2_is_busy(vq)) {
 694                 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
 695                 return -EBUSY;
 696         }
 697
 698         q_data->fourcc = f->fmt.pix.pixelformat;
 699         q_data->width = f->fmt.pix.width;
 700         q_data->height = f->fmt.pix.height;
 701         q_data->bytesperline = f->fmt.pix.bytesperline;
 702         q_data->sizeimage = f->fmt.pix.sizeimage;
 703         if (r) {
 704                 q_data->rect = *r;
 705         } else {
 706                 q_data->rect.left = 0;
 707                 q_data->rect.top = 0;
 708                 q_data->rect.width = f->fmt.pix.width;
 709                 q_data->rect.height = f->fmt.pix.height;
 710         }
 711
 712         switch (f->fmt.pix.pixelformat) {
 713         case V4L2_PIX_FMT_YUYV:
 714                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 715                 break;
 716         case V4L2_PIX_FMT_NV12:
 717                 if (!disable_tiling) {
 718                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 719                         break;
 720                 }
 721                 /* else fall through */
 722         case V4L2_PIX_FMT_YUV420:
 723         case V4L2_PIX_FMT_YVU420:
 724                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 725                 break;
 726         default:
 727                 break;
 728         }
 729
 730         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 731             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 732             ctx->use_vdoa)
 733                 vdoa_context_configure(ctx->vdoa, f->fmt.pix.width,
 734                                        f->fmt.pix.height,
 735                                        f->fmt.pix.pixelformat);
 736         else
 737                 ctx->use_vdoa = false;
 738
 739         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 740                 "Setting format for type %d, wxh: %dx%d, fmt: %4.4s %c\n",
 741                 f->type, q_data->width, q_data->height,
 742                 (char *)&q_data->fourcc,
 743                 (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 744
 745         return 0;
 746 }
 747
 748 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 749                               struct v4l2_format *f)
 750 {
 751         struct coda_ctx *ctx = fh_to_ctx(priv);
 752         struct coda_q_data *q_data_src;
 753         struct v4l2_rect r;
 754         int ret;
 755
 756         ret = coda_try_fmt_vid_cap(file, priv, f);
 757         if (ret)
 758                 return ret;
 759
 760         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 761         r.left = 0;
 762         r.top = 0;
 763         r.width = q_data_src->width;
 764         r.height = q_data_src->height;
 765
 766         return coda_s_fmt(ctx, f, &r);
 767 }
 768
 769 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 770                               struct v4l2_format *f)
 771 {
 772         struct coda_ctx *ctx = fh_to_ctx(priv);
 773         struct coda_q_data *q_data_src;
 774         struct v4l2_format f_cap;
 775         struct v4l2_rect r;
 776         int ret;
 777
 778         ret = coda_try_fmt_vid_out(file, priv, f);
 779         if (ret)
 780                 return ret;
 781
 782         ret = coda_s_fmt(ctx, f, NULL);
 783         if (ret)
 784                 return ret;
 785
 786         ctx->colorspace = f->fmt.pix.colorspace;
 787         ctx->xfer_func = f->fmt.pix.xfer_func;
 788         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 789         ctx->quantization = f->fmt.pix.quantization;
 790
 791         memset(&f_cap, 0, sizeof(f_cap));
 792         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 793         coda_g_fmt(file, priv, &f_cap);
 794         f_cap.fmt.pix.width = f->fmt.pix.width;
 795         f_cap.fmt.pix.height = f->fmt.pix.height;
 796
 797         ret = coda_try_fmt_vid_cap(file, priv, &f_cap);
 798         if (ret)
 799                 return ret;
 800
 801         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 802         r.left = 0;
 803         r.top = 0;
 804         r.width = q_data_src->width;
 805         r.height = q_data_src->height;
 806
 807         return coda_s_fmt(ctx, &f_cap, &r);
 808 }
 809
 810 static int coda_reqbufs(struct file *file, void *priv,
 811                         struct v4l2_requestbuffers *rb)
 812 {
 813         struct coda_ctx *ctx = fh_to_ctx(priv);
 814         int ret;
 815
 816         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 817         if (ret)
 818                 return ret;
 819
 820         /*
 821          * Allow to allocate instance specific per-context buffers, such as
 822          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 823          */
 824         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 825                 return ctx->ops->reqbufs(ctx, rb);
 826
 827         return 0;
 828 }
 829
 830 static int coda_qbuf(struct file *file, void *priv,
 831                      struct v4l2_buffer *buf)
 832 {
 833         struct coda_ctx *ctx = fh_to_ctx(priv);
 834
 835         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 836 }
 837
 838 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
 839                                       struct vb2_v4l2_buffer *buf)
 840 {
 841         return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
 842                 (buf->sequence == (ctx->qsequence - 1)));
 843 }
 844
 845 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
 846                        enum vb2_buffer_state state)
 847 {
 848         const struct v4l2_event eos_event = {
 849                 .type = V4L2_EVENT_EOS
 850         };
 851
 852         if (coda_buf_is_end_of_stream(ctx, buf)) {
 853                 buf->flags |= V4L2_BUF_FLAG_LAST;
 854
 855                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 856         }
 857
 858         v4l2_m2m_buf_done(buf, state);
 859 }
 860
 861 static int coda_g_selection(struct file *file, void *fh,
 862                             struct v4l2_selection *s)
 863 {
 864         struct coda_ctx *ctx = fh_to_ctx(fh);
 865         struct coda_q_data *q_data;
 866         struct v4l2_rect r, *rsel;
 867
 868         q_data = get_q_data(ctx, s->type);
 869         if (!q_data)
 870                 return -EINVAL;
 871
 872         r.left = 0;
 873         r.top = 0;
 874         r.width = q_data->width;
 875         r.height = q_data->height;
 876         rsel = &q_data->rect;
 877
 878         switch (s->target) {
 879         case V4L2_SEL_TGT_CROP_DEFAULT:
 880         case V4L2_SEL_TGT_CROP_BOUNDS:
 881                 rsel = &r;
 882                 /* fallthrough */
 883         case V4L2_SEL_TGT_CROP:
 884                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 885                         return -EINVAL;
 886                 break;
 887         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 888         case V4L2_SEL_TGT_COMPOSE_PADDED:
 889                 rsel = &r;
 890                 /* fallthrough */
 891         case V4L2_SEL_TGT_COMPOSE:
 892         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 893                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 894                         return -EINVAL;
 895                 break;
 896         default:
 897                 return -EINVAL;
 898         }
 899
 900         s->r = *rsel;
 901
 902         return 0;
 903 }
 904
 905 static int coda_try_encoder_cmd(struct file *file, void *fh,
 906                                 struct v4l2_encoder_cmd *ec)
 907 {
 908         if (ec->cmd != V4L2_ENC_CMD_STOP)
 909                 return -EINVAL;
 910
 911         if (ec->flags & V4L2_ENC_CMD_STOP_AT_GOP_END)
 912                 return -EINVAL;
 913
 914         return 0;
 915 }
 916
 917 static int coda_encoder_cmd(struct file *file, void *fh,
 918                             struct v4l2_encoder_cmd *ec)
 919 {
 920         struct coda_ctx *ctx = fh_to_ctx(fh);
 921         struct vb2_queue *dst_vq;
 922         int ret;
 923
 924         ret = coda_try_encoder_cmd(file, fh, ec);
 925         if (ret < 0)
 926                 return ret;
 927
 928         /* Ignore encoder stop command silently in decoder context */
 929         if (ctx->inst_type != CODA_INST_ENCODER)
 930                 return 0;
 931
 932         /* Set the stream-end flag on this context */
 933         ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
 934
 935         /* If there is no buffer in flight, wake up */
 936         if (!ctx->streamon_out || ctx->qsequence == ctx->osequence) {
 937                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
 938                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
 939                 dst_vq->last_buffer_dequeued = true;
 940                 wake_up(&dst_vq->done_wq);
 941         }
 942
 943         return 0;
 944 }
 945
 946 static int coda_try_decoder_cmd(struct file *file, void *fh,
 947                                 struct v4l2_decoder_cmd *dc)
 948 {
 949         if (dc->cmd != V4L2_DEC_CMD_STOP)
 950                 return -EINVAL;
 951
 952         if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
 953                 return -EINVAL;
 954
 955         if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
 956                 return -EINVAL;
 957
 958         return 0;
 959 }
 960
 961 static int coda_decoder_cmd(struct file *file, void *fh,
 962                             struct v4l2_decoder_cmd *dc)
 963 {
 964         struct coda_ctx *ctx = fh_to_ctx(fh);
 965         int ret;
 966
 967         ret = coda_try_decoder_cmd(file, fh, dc);
 968         if (ret < 0)
 969                 return ret;
 970
 971         /* Ignore decoder stop command silently in encoder context */
 972         if (ctx->inst_type != CODA_INST_DECODER)
 973                 return 0;
 974
 975         /* Set the stream-end flag on this context */
 976         coda_bit_stream_end_flag(ctx);
 977         ctx->hold = false;
 978         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
 979
 980         return 0;
 981 }
 982
 983 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
 984 {
 985         struct coda_ctx *ctx = fh_to_ctx(fh);
 986         struct v4l2_fract *tpf;
 987
 988         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 989                 return -EINVAL;
 990
 991         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
 992         tpf = &a->parm.output.timeperframe;
 993         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
 994         tpf->numerator = 1 + (ctx->params.framerate >>
 995                               CODA_FRATE_DIV_OFFSET);
 996
 997         return 0;
 998 }
 999
1000 /*
1001  * Approximate timeperframe v4l2_fract with values that can be written
1002  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1003  */
1004 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1005 {
1006         struct v4l2_fract s = *timeperframe;
1007         struct v4l2_fract f0;
1008         struct v4l2_fract f1 = { 1, 0 };
1009         struct v4l2_fract f2 = { 0, 1 };
1010         unsigned int i, div, s_denominator;
1011
1012         /* Lower bound is 1/65535 */
1013         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1014                 timeperframe->numerator = 1;
1015                 timeperframe->denominator = 65535;
1016                 return;
1017         }
1018
1019         /* Upper bound is 65536/1, map everything above to infinity */
1020         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1021                 timeperframe->numerator = 1;
1022                 timeperframe->denominator = 0;
1023                 return;
1024         }
1025
1026         /* Reduce fraction to lowest terms */
1027         div = gcd(s.numerator, s.denominator);
1028         if (div > 1) {
1029                 s.numerator /= div;
1030                 s.denominator /= div;
1031         }
1032
1033         if (s.numerator <= 65536 && s.denominator < 65536) {
1034                 *timeperframe = s;
1035                 return;
1036         }
1037
1038         /* Find successive convergents from continued fraction expansion */
1039         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1040                 f0 = f1;
1041                 f1 = f2;
1042
1043                 /* Stop when f2 exactly equals timeperframe */
1044                 if (s.numerator == 0)
1045                         break;
1046
1047                 i = s.denominator / s.numerator;
1048
1049                 f2.numerator = f0.numerator + i * f1.numerator;
1050                 f2.denominator = f0.denominator + i * f2.denominator;
1051
1052                 s_denominator = s.numerator;
1053                 s.numerator = s.denominator % s.numerator;
1054                 s.denominator = s_denominator;
1055         }
1056
1057         *timeperframe = f1;
1058 }
1059
1060 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1061 {
1062         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1063                 timeperframe->denominator;
1064 }
1065
1066 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1067 {
1068         struct coda_ctx *ctx = fh_to_ctx(fh);
1069         struct v4l2_fract *tpf;
1070
1071         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1072                 return -EINVAL;
1073
1074         tpf = &a->parm.output.timeperframe;
1075         coda_approximate_timeperframe(tpf);
1076         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1077
1078         return 0;
1079 }
1080
1081 static int coda_subscribe_event(struct v4l2_fh *fh,
1082                                 const struct v4l2_event_subscription *sub)
1083 {
1084         switch (sub->type) {
1085         case V4L2_EVENT_EOS:
1086                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1087         default:
1088                 return v4l2_ctrl_subscribe_event(fh, sub);
1089         }
1090 }
1091
1092 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1093         .vidioc_querycap        = coda_querycap,
1094
1095         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1096         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1097         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1098         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1099
1100         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1101         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1102         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1103         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1104
1105         .vidioc_reqbufs         = coda_reqbufs,
1106         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1107
1108         .vidioc_qbuf            = coda_qbuf,
1109         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1110         .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
1111         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1112         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1113
1114         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1115         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1116
1117         .vidioc_g_selection     = coda_g_selection,
1118
1119         .vidioc_try_encoder_cmd = coda_try_encoder_cmd,
1120         .vidioc_encoder_cmd     = coda_encoder_cmd,
1121         .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
1122         .vidioc_decoder_cmd     = coda_decoder_cmd,
1123
1124         .vidioc_g_parm          = coda_g_parm,
1125         .vidioc_s_parm          = coda_s_parm,
1126
1127         .vidioc_subscribe_event = coda_subscribe_event,
1128         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1129 };
1130
1131 /*
1132  * Mem-to-mem operations.
1133  */
1134
1135 static void coda_device_run(void *m2m_priv)
1136 {
1137         struct coda_ctx *ctx = m2m_priv;
1138         struct coda_dev *dev = ctx->dev;
1139
1140         queue_work(dev->workqueue, &ctx->pic_run_work);
1141 }
1142
1143 static void coda_pic_run_work(struct work_struct *work)
1144 {
1145         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1146         struct coda_dev *dev = ctx->dev;
1147         int ret;
1148
1149         mutex_lock(&ctx->buffer_mutex);
1150         mutex_lock(&dev->coda_mutex);
1151
1152         ret = ctx->ops->prepare_run(ctx);
1153         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
1154                 mutex_unlock(&dev->coda_mutex);
1155                 mutex_unlock(&ctx->buffer_mutex);
1156                 /* job_finish scheduled by prepare_decode */
1157                 return;
1158         }
1159
1160         if (!wait_for_completion_timeout(&ctx->completion,
1161                                          msecs_to_jiffies(1000))) {
1162                 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
1163
1164                 ctx->hold = true;
1165
1166                 coda_hw_reset(ctx);
1167
1168                 if (ctx->ops->run_timeout)
1169                         ctx->ops->run_timeout(ctx);
1170         } else if (!ctx->aborting) {
1171                 ctx->ops->finish_run(ctx);
1172         }
1173
1174         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1175             ctx->ops->seq_end_work)
1176                 queue_work(dev->workqueue, &ctx->seq_end_work);
1177
1178         mutex_unlock(&dev->coda_mutex);
1179         mutex_unlock(&ctx->buffer_mutex);
1180
1181         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1182 }
1183
1184 static int coda_job_ready(void *m2m_priv)
1185 {
1186         struct coda_ctx *ctx = m2m_priv;
1187         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1188
1189         /*
1190          * For both 'P' and 'key' frame cases 1 picture
1191          * and 1 frame are needed. In the decoder case,
1192          * the compressed frame can be in the bitstream.
1193          */
1194         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1195                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1196                          "not ready: not enough video buffers.\n");
1197                 return 0;
1198         }
1199
1200         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1201                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1202                          "not ready: not enough video capture buffers.\n");
1203                 return 0;
1204         }
1205
1206         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1207                 bool stream_end = ctx->bit_stream_param &
1208                                   CODA_BIT_STREAM_END_FLAG;
1209                 int num_metas = ctx->num_metas;
1210                 unsigned int count;
1211
1212                 count = hweight32(ctx->frm_dis_flg);
1213                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1214                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1215                                  "%d: not ready: all internal buffers in use: %d/%d (0x%x)",
1216                                  ctx->idx, count, ctx->num_internal_frames,
1217                                  ctx->frm_dis_flg);
1218                         return 0;
1219                 }
1220
1221                 if (ctx->hold && !src_bufs) {
1222                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1223                                  "%d: not ready: on hold for more buffers.\n",
1224                                  ctx->idx);
1225                         return 0;
1226                 }
1227
1228                 if (!stream_end && (num_metas + src_bufs) < 2) {
1229                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1230                                  "%d: not ready: need 2 buffers available (%d, %d)\n",
1231                                  ctx->idx, num_metas, src_bufs);
1232                         return 0;
1233                 }
1234
1235
1236                 if (!src_bufs && !stream_end &&
1237                     (coda_get_bitstream_payload(ctx) < 512)) {
1238                         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1239                                  "%d: not ready: not enough bitstream data (%d).\n",
1240                                  ctx->idx, coda_get_bitstream_payload(ctx));
1241                         return 0;
1242                 }
1243         }
1244
1245         if (ctx->aborting) {
1246                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1247                          "not ready: aborting\n");
1248                 return 0;
1249         }
1250
1251         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1252                         "job ready\n");
1253
1254         return 1;
1255 }
1256
1257 static void coda_job_abort(void *priv)
1258 {
1259         struct coda_ctx *ctx = priv;
1260
1261         ctx->aborting = 1;
1262
1263         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1264                  "Aborting task\n");
1265 }
1266
1267 static void coda_lock(void *m2m_priv)
1268 {
1269         struct coda_ctx *ctx = m2m_priv;
1270         struct coda_dev *pcdev = ctx->dev;
1271
1272         mutex_lock(&pcdev->dev_mutex);
1273 }
1274
1275 static void coda_unlock(void *m2m_priv)
1276 {
1277         struct coda_ctx *ctx = m2m_priv;
1278         struct coda_dev *pcdev = ctx->dev;
1279
1280         mutex_unlock(&pcdev->dev_mutex);
1281 }
1282
1283 static const struct v4l2_m2m_ops coda_m2m_ops = {
1284         .device_run     = coda_device_run,
1285         .job_ready      = coda_job_ready,
1286         .job_abort      = coda_job_abort,
1287         .lock           = coda_lock,
1288         .unlock         = coda_unlock,
1289 };
1290
1291 static void set_default_params(struct coda_ctx *ctx)
1292 {
1293         unsigned int max_w, max_h, usize, csize;
1294
1295         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1296                                      ctx->cvd->dst_formats[0]);
1297         max_w = min(ctx->codec->max_w, 1920U);
1298         max_h = min(ctx->codec->max_h, 1088U);
1299         usize = max_w * max_h * 3 / 2;
1300         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1301
1302         ctx->params.codec_mode = ctx->codec->mode;
1303         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG)
1304                 ctx->colorspace = V4L2_COLORSPACE_JPEG;
1305         else
1306                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1307         ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1308         ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1309         ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1310         ctx->params.framerate = 30;
1311
1312         /* Default formats for output and input queues */
1313         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1314         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1315         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1316         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1317         ctx->q_data[V4L2_M2M_DST].width = max_w;
1318         ctx->q_data[V4L2_M2M_DST].height = max_h;
1319         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1320                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1321                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1322                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1323                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1324         } else {
1325                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1326                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1327                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1328                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1329         }
1330         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1331         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1332         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1333         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1334
1335         /*
1336          * Since the RBC2AXI logic only supports a single chroma plane,
1337          * macroblock tiling only works for to NV12 pixel format.
1338          */
1339         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1340 }
1341
1342 /*
1343  * Queue operations
1344  */
1345 static int coda_queue_setup(struct vb2_queue *vq,
1346                                 unsigned int *nbuffers, unsigned int *nplanes,
1347                                 unsigned int sizes[], struct device *alloc_devs[])
1348 {
1349         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1350         struct coda_q_data *q_data;
1351         unsigned int size;
1352
1353         q_data = get_q_data(ctx, vq->type);
1354         size = q_data->sizeimage;
1355
1356         *nplanes = 1;
1357         sizes[0] = size;
1358
1359         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1360                  "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1361
1362         return 0;
1363 }
1364
1365 static int coda_buf_prepare(struct vb2_buffer *vb)
1366 {
1367         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1368         struct coda_q_data *q_data;
1369
1370         q_data = get_q_data(ctx, vb->vb2_queue->type);
1371
1372         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1373                 v4l2_warn(&ctx->dev->v4l2_dev,
1374                           "%s data will not fit into plane (%lu < %lu)\n",
1375                           __func__, vb2_plane_size(vb, 0),
1376                           (long)q_data->sizeimage);
1377                 return -EINVAL;
1378         }
1379
1380         return 0;
1381 }
1382
1383 static void coda_buf_queue(struct vb2_buffer *vb)
1384 {
1385         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1386         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1387         struct vb2_queue *vq = vb->vb2_queue;
1388         struct coda_q_data *q_data;
1389
1390         q_data = get_q_data(ctx, vb->vb2_queue->type);
1391
1392         /*
1393          * In the decoder case, immediately try to copy the buffer into the
1394          * bitstream ringbuffer and mark it as ready to be dequeued.
1395          */
1396         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1397                 /*
1398                  * For backwards compatibility, queuing an empty buffer marks
1399                  * the stream end
1400                  */
1401                 if (vb2_get_plane_payload(vb, 0) == 0)
1402                         coda_bit_stream_end_flag(ctx);
1403
1404                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1405                         /*
1406                          * Unless already done, try to obtain profile_idc and
1407                          * level_idc from the SPS header. This allows to decide
1408                          * whether to enable reordering during sequence
1409                          * initialization.
1410                          */
1411                         if (!ctx->params.h264_profile_idc)
1412                                 coda_sps_parse_profile(ctx, vb);
1413                 }
1414
1415                 mutex_lock(&ctx->bitstream_mutex);
1416                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1417                 if (vb2_is_streaming(vb->vb2_queue))
1418                         /* This set buf->sequence = ctx->qsequence++ */
1419                         coda_fill_bitstream(ctx, NULL);
1420                 mutex_unlock(&ctx->bitstream_mutex);
1421         } else {
1422                 if (ctx->inst_type == CODA_INST_ENCODER &&
1423                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1424                         vbuf->sequence = ctx->qsequence++;
1425                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1426         }
1427 }
1428
1429 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1430                        size_t size, const char *name, struct dentry *parent)
1431 {
1432         buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1433                                         GFP_KERNEL);
1434         if (!buf->vaddr) {
1435                 v4l2_err(&dev->v4l2_dev,
1436                          "Failed to allocate %s buffer of size %zu\n",
1437                          name, size);
1438                 return -ENOMEM;
1439         }
1440
1441         buf->size = size;
1442
1443         if (name && parent) {
1444                 buf->blob.data = buf->vaddr;
1445                 buf->blob.size = size;
1446                 buf->dentry = debugfs_create_blob(name, 0644, parent,
1447                                                   &buf->blob);
1448                 if (!buf->dentry)
1449                         dev_warn(&dev->plat_dev->dev,
1450                                  "failed to create debugfs entry %s\n", name);
1451         }
1452
1453         return 0;
1454 }
1455
1456 void coda_free_aux_buf(struct coda_dev *dev,
1457                        struct coda_aux_buf *buf)
1458 {
1459         if (buf->vaddr) {
1460                 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1461                                   buf->vaddr, buf->paddr);
1462                 buf->vaddr = NULL;
1463                 buf->size = 0;
1464                 debugfs_remove(buf->dentry);
1465                 buf->dentry = NULL;
1466         }
1467 }
1468
1469 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1470 {
1471         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1472         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1473         struct coda_q_data *q_data_src, *q_data_dst;
1474         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1475         struct vb2_v4l2_buffer *buf;
1476         struct list_head list;
1477         int ret = 0;
1478
1479         if (count < 1)
1480                 return -EINVAL;
1481
1482         INIT_LIST_HEAD(&list);
1483
1484         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1485         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1486                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1487                         /* copy the buffers that were queued before streamon */
1488                         mutex_lock(&ctx->bitstream_mutex);
1489                         coda_fill_bitstream(ctx, &list);
1490                         mutex_unlock(&ctx->bitstream_mutex);
1491
1492                         if (coda_get_bitstream_payload(ctx) < 512) {
1493                                 ret = -EINVAL;
1494                                 goto err;
1495                         }
1496                 }
1497
1498                 ctx->streamon_out = 1;
1499         } else {
1500                 ctx->streamon_cap = 1;
1501         }
1502
1503         /* Don't start the coda unless both queues are on */
1504         if (!(ctx->streamon_out && ctx->streamon_cap))
1505                 goto out;
1506
1507         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1508         if ((q_data_src->width != q_data_dst->width &&
1509              round_up(q_data_src->width, 16) != q_data_dst->width) ||
1510             (q_data_src->height != q_data_dst->height &&
1511              round_up(q_data_src->height, 16) != q_data_dst->height)) {
1512                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1513                          q_data_src->width, q_data_src->height,
1514                          q_data_dst->width, q_data_dst->height);
1515                 ret = -EINVAL;
1516                 goto err;
1517         }
1518
1519         /* Allow BIT decoder device_run with no new buffers queued */
1520         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1521                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1522
1523         ctx->gopcounter = ctx->params.gop_size - 1;
1524
1525         ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1526                                      q_data_dst->fourcc);
1527         if (!ctx->codec) {
1528                 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1529                 ret = -EINVAL;
1530                 goto err;
1531         }
1532
1533         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1534                 ctx->params.gop_size = 1;
1535         ctx->gopcounter = ctx->params.gop_size - 1;
1536
1537         ret = ctx->ops->start_streaming(ctx);
1538         if (ctx->inst_type == CODA_INST_DECODER) {
1539                 if (ret == -EAGAIN)
1540                         goto out;
1541         }
1542         if (ret < 0)
1543                 goto err;
1544
1545 out:
1546         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1547                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1548                         list_del(&m2m_buf->list);
1549                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
1550                 }
1551         }
1552         return 0;
1553
1554 err:
1555         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1556                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
1557                         list_del(&m2m_buf->list);
1558                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
1559                 }
1560                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1561                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1562         } else {
1563                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1564                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1565         }
1566         return ret;
1567 }
1568
1569 static void coda_stop_streaming(struct vb2_queue *q)
1570 {
1571         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1572         struct coda_dev *dev = ctx->dev;
1573         struct vb2_v4l2_buffer *buf;
1574         unsigned long flags;
1575         bool stop;
1576
1577         stop = ctx->streamon_out && ctx->streamon_cap;
1578
1579         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1580                 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1581                          "%s: output\n", __func__);
1582                 ctx->streamon_out = 0;
1583
1584                 coda_bit_stream_end_flag(ctx);
1585
1586                 ctx->qsequence = 0;
1587
1588                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1589                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1590         } else {
1591                 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1592                          "%s: capture\n", __func__);
1593                 ctx->streamon_cap = 0;
1594
1595                 ctx->osequence = 0;
1596                 ctx->sequence_offset = 0;
1597
1598                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1599                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1600         }
1601
1602         if (stop) {
1603                 struct coda_buffer_meta *meta;
1604
1605                 if (ctx->ops->seq_end_work) {
1606                         queue_work(dev->workqueue, &ctx->seq_end_work);
1607                         flush_work(&ctx->seq_end_work);
1608                 }
1609                 spin_lock_irqsave(&ctx->buffer_meta_lock, flags);
1610                 while (!list_empty(&ctx->buffer_meta_list)) {
1611                         meta = list_first_entry(&ctx->buffer_meta_list,
1612                                                 struct coda_buffer_meta, list);
1613                         list_del(&meta->list);
1614                         kfree(meta);
1615                 }
1616                 ctx->num_metas = 0;
1617                 spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags);
1618                 kfifo_init(&ctx->bitstream_fifo,
1619                         ctx->bitstream.vaddr, ctx->bitstream.size);
1620                 ctx->runcounter = 0;
1621                 ctx->aborting = 0;
1622         }
1623
1624         if (!ctx->streamon_out && !ctx->streamon_cap)
1625                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1626 }
1627
1628 static const struct vb2_ops coda_qops = {
1629         .queue_setup            = coda_queue_setup,
1630         .buf_prepare            = coda_buf_prepare,
1631         .buf_queue              = coda_buf_queue,
1632         .start_streaming        = coda_start_streaming,
1633         .stop_streaming         = coda_stop_streaming,
1634         .wait_prepare           = vb2_ops_wait_prepare,
1635         .wait_finish            = vb2_ops_wait_finish,
1636 };
1637
1638 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1639 {
1640         struct coda_ctx *ctx =
1641                         container_of(ctrl->handler, struct coda_ctx, ctrls);
1642
1643         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1644                  "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1645
1646         switch (ctrl->id) {
1647         case V4L2_CID_HFLIP:
1648                 if (ctrl->val)
1649                         ctx->params.rot_mode |= CODA_MIR_HOR;
1650                 else
1651                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
1652                 break;
1653         case V4L2_CID_VFLIP:
1654                 if (ctrl->val)
1655                         ctx->params.rot_mode |= CODA_MIR_VER;
1656                 else
1657                         ctx->params.rot_mode &= ~CODA_MIR_VER;
1658                 break;
1659         case V4L2_CID_MPEG_VIDEO_BITRATE:
1660                 ctx->params.bitrate = ctrl->val / 1000;
1661                 break;
1662         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1663                 ctx->params.gop_size = ctrl->val;
1664                 break;
1665         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1666                 ctx->params.h264_intra_qp = ctrl->val;
1667                 break;
1668         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1669                 ctx->params.h264_inter_qp = ctrl->val;
1670                 break;
1671         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1672                 ctx->params.h264_min_qp = ctrl->val;
1673                 break;
1674         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1675                 ctx->params.h264_max_qp = ctrl->val;
1676                 break;
1677         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1678                 ctx->params.h264_deblk_alpha = ctrl->val;
1679                 break;
1680         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1681                 ctx->params.h264_deblk_beta = ctrl->val;
1682                 break;
1683         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1684                 ctx->params.h264_deblk_enabled = (ctrl->val ==
1685                                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1686                 break;
1687         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
1688                 /* TODO: switch between baseline and constrained baseline */
1689                 ctx->params.h264_profile_idc = 66;
1690                 break;
1691         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
1692                 /* nothing to do, this is set by the encoder */
1693                 break;
1694         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1695                 ctx->params.mpeg4_intra_qp = ctrl->val;
1696                 break;
1697         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1698                 ctx->params.mpeg4_inter_qp = ctrl->val;
1699                 break;
1700         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
1701         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
1702                 /* nothing to do, these are fixed */
1703                 break;
1704         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1705                 ctx->params.slice_mode = ctrl->val;
1706                 break;
1707         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1708                 ctx->params.slice_max_mb = ctrl->val;
1709                 break;
1710         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1711                 ctx->params.slice_max_bits = ctrl->val * 8;
1712                 break;
1713         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1714                 break;
1715         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1716                 ctx->params.intra_refresh = ctrl->val;
1717                 break;
1718         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
1719                 ctx->params.force_ipicture = true;
1720                 break;
1721         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1722                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1723                 break;
1724         case V4L2_CID_JPEG_RESTART_INTERVAL:
1725                 ctx->params.jpeg_restart_interval = ctrl->val;
1726                 break;
1727         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1728                 ctx->params.vbv_delay = ctrl->val;
1729                 break;
1730         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1731                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1732                 break;
1733         default:
1734                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1735                         "Invalid control, id=%d, val=%d\n",
1736                         ctrl->id, ctrl->val);
1737                 return -EINVAL;
1738         }
1739
1740         return 0;
1741 }
1742
1743 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1744         .s_ctrl = coda_s_ctrl,
1745 };
1746
1747 static void coda_encode_ctrls(struct coda_ctx *ctx)
1748 {
1749         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
1750
1751         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1752                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1753         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1754                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
1755         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1756                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1757         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1758                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1759         if (ctx->dev->devtype->product != CODA_960) {
1760                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1761                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1762         }
1763         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1764                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1765         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1766                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, 0, 15, 1, 0);
1767         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1768                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, 0, 15, 1, 0);
1769         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1770                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1771                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED, 0x0,
1772                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1773         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1774                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
1775                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,
1776                 V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
1777         if (ctx->dev->devtype->product == CODA_7541) {
1778                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1779                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
1780                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
1781                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1782                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1783                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
1784                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
1785         }
1786         if (ctx->dev->devtype->product == CODA_960) {
1787                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1788                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
1789                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
1790                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
1791                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
1792                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
1793                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
1794                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
1795                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
1796         }
1797         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1798                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1799         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1800                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1801         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1802                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
1803                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
1804                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
1805         if (ctx->dev->devtype->product == CODA_7541 ||
1806             ctx->dev->devtype->product == CODA_960) {
1807                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1808                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
1809                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
1810                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
1811                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
1812         }
1813         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1814                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1815                 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1816                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1817         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1818                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1819         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1820                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1821                 500);
1822         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1823                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1824                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1825                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1826                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1827         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1828                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1829                 1920 * 1088 / 256, 1, 0);
1830         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1831                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
1832         /*
1833          * The maximum VBV size value is 0x7fffffff bits,
1834          * one bit less than 262144 KiB
1835          */
1836         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1837                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
1838 }
1839
1840 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1841 {
1842         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1843                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1844         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1845                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1846 }
1847
1848 static int coda_ctrls_setup(struct coda_ctx *ctx)
1849 {
1850         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
1851
1852         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1853                 V4L2_CID_HFLIP, 0, 1, 1, 0);
1854         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1855                 V4L2_CID_VFLIP, 0, 1, 1, 0);
1856         if (ctx->inst_type == CODA_INST_ENCODER) {
1857                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
1858                         coda_jpeg_encode_ctrls(ctx);
1859                 else
1860                         coda_encode_ctrls(ctx);
1861         }
1862
1863         if (ctx->ctrls.error) {
1864                 v4l2_err(&ctx->dev->v4l2_dev,
1865                         "control initialization error (%d)",
1866                         ctx->ctrls.error);
1867                 return -EINVAL;
1868         }
1869
1870         return v4l2_ctrl_handler_setup(&ctx->ctrls);
1871 }
1872
1873 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
1874 {
1875         vq->drv_priv = ctx;
1876         vq->ops = &coda_qops;
1877         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1878         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1879         vq->lock = &ctx->dev->dev_mutex;
1880         /* One way to indicate end-of-stream for coda is to set the
1881          * bytesused == 0. However by default videobuf2 handles bytesused
1882          * equal to 0 as a special case and changes its value to the size
1883          * of the buffer. Set the allow_zero_bytesused flag, so
1884          * that videobuf2 will keep the value of bytesused intact.
1885          */
1886         vq->allow_zero_bytesused = 1;
1887         vq->dev = &ctx->dev->plat_dev->dev;
1888
1889         return vb2_queue_init(vq);
1890 }
1891
1892 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
1893                             struct vb2_queue *dst_vq)
1894 {
1895         int ret;
1896
1897         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1898         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1899         src_vq->mem_ops = &vb2_dma_contig_memops;
1900
1901         ret = coda_queue_init(priv, src_vq);
1902         if (ret)
1903                 return ret;
1904
1905         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1906         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1907         dst_vq->mem_ops = &vb2_dma_contig_memops;
1908
1909         return coda_queue_init(priv, dst_vq);
1910 }
1911
1912 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
1913                             struct vb2_queue *dst_vq)
1914 {
1915         int ret;
1916
1917         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1918         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
1919         src_vq->mem_ops = &vb2_vmalloc_memops;
1920
1921         ret = coda_queue_init(priv, src_vq);
1922         if (ret)
1923                 return ret;
1924
1925         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1926         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1927         dst_vq->mem_ops = &vb2_dma_contig_memops;
1928
1929         return coda_queue_init(priv, dst_vq);
1930 }
1931
1932 static int coda_next_free_instance(struct coda_dev *dev)
1933 {
1934         int idx = ffz(dev->instance_mask);
1935
1936         if ((idx < 0) ||
1937             (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
1938                 return -EBUSY;
1939
1940         return idx;
1941 }
1942
1943 /*
1944  * File operations
1945  */
1946
1947 static int coda_open(struct file *file)
1948 {
1949         struct video_device *vdev = video_devdata(file);
1950         struct coda_dev *dev = video_get_drvdata(vdev);
1951         struct coda_ctx *ctx = NULL;
1952         char *name;
1953         int ret;
1954         int idx;
1955
1956         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1957         if (!ctx)
1958                 return -ENOMEM;
1959
1960         idx = coda_next_free_instance(dev);
1961         if (idx < 0) {
1962                 ret = idx;
1963                 goto err_coda_max;
1964         }
1965         set_bit(idx, &dev->instance_mask);
1966
1967         name = kasprintf(GFP_KERNEL, "context%d", idx);
1968         if (!name) {
1969                 ret = -ENOMEM;
1970                 goto err_coda_name_init;
1971         }
1972
1973         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
1974         kfree(name);
1975
1976         ctx->cvd = to_coda_video_device(vdev);
1977         ctx->inst_type = ctx->cvd->type;
1978         ctx->ops = ctx->cvd->ops;
1979         ctx->use_bit = !ctx->cvd->direct;
1980         init_completion(&ctx->completion);
1981         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
1982         if (ctx->ops->seq_end_work)
1983                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
1984         v4l2_fh_init(&ctx->fh, video_devdata(file));
1985         file->private_data = &ctx->fh;
1986         v4l2_fh_add(&ctx->fh);
1987         ctx->dev = dev;
1988         ctx->idx = idx;
1989         switch (dev->devtype->product) {
1990         case CODA_960:
1991                 /*
1992                  * Enabling the BWB when decoding can hang the firmware with
1993                  * certain streams. The issue was tracked as ENGR00293425 by
1994                  * Freescale. As a workaround, disable BWB for all decoders.
1995                  * The enable_bwb module parameter allows to override this.
1996                  */
1997                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
1998                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
1999                 /* fallthrough */
2000         case CODA_7541:
2001                 ctx->reg_idx = 0;
2002                 break;
2003         default:
2004                 ctx->reg_idx = idx;
2005         }
2006         if (ctx->dev->vdoa && !disable_vdoa) {
2007                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2008                 if (!ctx->vdoa)
2009                         v4l2_warn(&dev->v4l2_dev,
2010                                   "Failed to create vdoa context: not using vdoa");
2011         }
2012         ctx->use_vdoa = false;
2013
2014         /* Power up and upload firmware if necessary */
2015         ret = pm_runtime_get_sync(&dev->plat_dev->dev);
2016         if (ret < 0) {
2017                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2018                 goto err_pm_get;
2019         }
2020
2021         ret = clk_prepare_enable(dev->clk_per);
2022         if (ret)
2023                 goto err_clk_per;
2024
2025         ret = clk_prepare_enable(dev->clk_ahb);
2026         if (ret)
2027                 goto err_clk_ahb;
2028
2029         set_default_params(ctx);
2030         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2031                                             ctx->ops->queue_init);
2032         if (IS_ERR(ctx->fh.m2m_ctx)) {
2033                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2034
2035                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2036                          __func__, ret);
2037                 goto err_ctx_init;
2038         }
2039
2040         ret = coda_ctrls_setup(ctx);
2041         if (ret) {
2042                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2043                 goto err_ctrls_setup;
2044         }
2045
2046         ctx->fh.ctrl_handler = &ctx->ctrls;
2047
2048         mutex_init(&ctx->bitstream_mutex);
2049         mutex_init(&ctx->buffer_mutex);
2050         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2051         spin_lock_init(&ctx->buffer_meta_lock);
2052
2053         coda_lock(ctx);
2054         list_add(&ctx->list, &dev->instances);
2055         coda_unlock(ctx);
2056
2057         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
2058                  ctx->idx, ctx);
2059
2060         return 0;
2061
2062 err_ctrls_setup:
2063         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2064 err_ctx_init:
2065         clk_disable_unprepare(dev->clk_ahb);
2066 err_clk_ahb:
2067         clk_disable_unprepare(dev->clk_per);
2068 err_clk_per:
2069         pm_runtime_put_sync(&dev->plat_dev->dev);
2070 err_pm_get:
2071         v4l2_fh_del(&ctx->fh);
2072         v4l2_fh_exit(&ctx->fh);
2073         clear_bit(ctx->idx, &dev->instance_mask);
2074 err_coda_name_init:
2075 err_coda_max:
2076         kfree(ctx);
2077         return ret;
2078 }
2079
2080 static int coda_release(struct file *file)
2081 {
2082         struct coda_dev *dev = video_drvdata(file);
2083         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2084
2085         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
2086                  ctx);
2087
2088         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2089                 coda_bit_stream_end_flag(ctx);
2090
2091         /* If this instance is running, call .job_abort and wait for it to end */
2092         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2093
2094         if (ctx->vdoa)
2095                 vdoa_context_destroy(ctx->vdoa);
2096
2097         /* In case the instance was not running, we still need to call SEQ_END */
2098         if (ctx->ops->seq_end_work) {
2099                 queue_work(dev->workqueue, &ctx->seq_end_work);
2100                 flush_work(&ctx->seq_end_work);
2101         }
2102
2103         coda_lock(ctx);
2104         list_del(&ctx->list);
2105         coda_unlock(ctx);
2106
2107         if (ctx->dev->devtype->product == CODA_DX6)
2108                 coda_free_aux_buf(dev, &ctx->workbuf);
2109
2110         v4l2_ctrl_handler_free(&ctx->ctrls);
2111         clk_disable_unprepare(dev->clk_ahb);
2112         clk_disable_unprepare(dev->clk_per);
2113         pm_runtime_put_sync(&dev->plat_dev->dev);
2114         v4l2_fh_del(&ctx->fh);
2115         v4l2_fh_exit(&ctx->fh);
2116         clear_bit(ctx->idx, &dev->instance_mask);
2117         if (ctx->ops->release)
2118                 ctx->ops->release(ctx);
2119         debugfs_remove_recursive(ctx->debugfs_entry);
2120         kfree(ctx);
2121
2122         return 0;
2123 }
2124
2125 static const struct v4l2_file_operations coda_fops = {
2126         .owner          = THIS_MODULE,
2127         .open           = coda_open,
2128         .release        = coda_release,
2129         .poll           = v4l2_m2m_fop_poll,
2130         .unlocked_ioctl = video_ioctl2,
2131         .mmap           = v4l2_m2m_fop_mmap,
2132 };
2133
2134 static int coda_hw_init(struct coda_dev *dev)
2135 {
2136         u32 data;
2137         u16 *p;
2138         int i, ret;
2139
2140         ret = clk_prepare_enable(dev->clk_per);
2141         if (ret)
2142                 goto err_clk_per;
2143
2144         ret = clk_prepare_enable(dev->clk_ahb);
2145         if (ret)
2146                 goto err_clk_ahb;
2147
2148         reset_control_reset(dev->rstc);
2149
2150         /*
2151          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2152          * The 16-bit chars in the code buffer are in memory access
2153          * order, re-sort them to CODA order for register download.
2154          * Data in this SRAM survives a reboot.
2155          */
2156         p = (u16 *)dev->codebuf.vaddr;
2157         if (dev->devtype->product == CODA_DX6) {
2158                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2159                         data = CODA_DOWN_ADDRESS_SET(i) |
2160                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2161                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2162                 }
2163         } else {
2164                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2165                         data = CODA_DOWN_ADDRESS_SET(i) |
2166                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2167                                                         3 - (i % 4)]);
2168                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2169                 }
2170         }
2171
2172         /* Clear registers */
2173         for (i = 0; i < 64; i++)
2174                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2175
2176         /* Tell the BIT where to find everything it needs */
2177         if (dev->devtype->product == CODA_960 ||
2178             dev->devtype->product == CODA_7541) {
2179                 coda_write(dev, dev->tempbuf.paddr,
2180                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2181                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2182         } else {
2183                 coda_write(dev, dev->workbuf.paddr,
2184                               CODA_REG_BIT_WORK_BUF_ADDR);
2185         }
2186         coda_write(dev, dev->codebuf.paddr,
2187                       CODA_REG_BIT_CODE_BUF_ADDR);
2188         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2189
2190         /* Set default values */
2191         switch (dev->devtype->product) {
2192         case CODA_DX6:
2193                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2194                            CODA_REG_BIT_STREAM_CTRL);
2195                 break;
2196         default:
2197                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2198                            CODA_REG_BIT_STREAM_CTRL);
2199         }
2200         if (dev->devtype->product == CODA_960)
2201                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2202                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2203         else
2204                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2205
2206         if (dev->devtype->product != CODA_DX6)
2207                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2208
2209         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2210                       CODA_REG_BIT_INT_ENABLE);
2211
2212         /* Reset VPU and start processor */
2213         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2214         data |= CODA_REG_RESET_ENABLE;
2215         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2216         udelay(10);
2217         data &= ~CODA_REG_RESET_ENABLE;
2218         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2219         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2220
2221         clk_disable_unprepare(dev->clk_ahb);
2222         clk_disable_unprepare(dev->clk_per);
2223
2224         return 0;
2225
2226 err_clk_ahb:
2227         clk_disable_unprepare(dev->clk_per);
2228 err_clk_per:
2229         return ret;
2230 }
2231
2232 static int coda_register_device(struct coda_dev *dev, int i)
2233 {
2234         struct video_device *vfd = &dev->vfd[i];
2235
2236         if (i >= dev->devtype->num_vdevs)
2237                 return -EINVAL;
2238
2239         strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2240         vfd->fops       = &coda_fops;
2241         vfd->ioctl_ops  = &coda_ioctl_ops;
2242         vfd->release    = video_device_release_empty,
2243         vfd->lock       = &dev->dev_mutex;
2244         vfd->v4l2_dev   = &dev->v4l2_dev;
2245         vfd->vfl_dir    = VFL_DIR_M2M;
2246         video_set_drvdata(vfd, dev);
2247
2248         /* Not applicable, use the selection API instead */
2249         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2250         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2251         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2252
2253         return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
2254 }
2255
2256 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2257                                size_t size)
2258 {
2259         u32 *src = (u32 *)buf;
2260
2261         /* Check if the firmware has a 16-byte Freescale header, skip it */
2262         if (buf[0] == 'M' && buf[1] == 'X')
2263                 src += 4;
2264         /*
2265          * Check whether the firmware is in native order or pre-reordered for
2266          * memory access. The first instruction opcode always is 0xe40e.
2267          */
2268         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2269                 u32 *dst = dev->codebuf.vaddr;
2270                 int i;
2271
2272                 /* Firmware in native order, reorder while copying */
2273                 if (dev->devtype->product == CODA_DX6) {
2274                         for (i = 0; i < (size - 16) / 4; i++)
2275                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2276                 } else {
2277                         for (i = 0; i < (size - 16) / 4; i += 2) {
2278                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2279                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2280                         }
2281                 }
2282         } else {
2283                 /* Copy the already reordered firmware image */
2284                 memcpy(dev->codebuf.vaddr, src, size);
2285         }
2286 }
2287
2288 static void coda_fw_callback(const struct firmware *fw, void *context);
2289
2290 static int coda_firmware_request(struct coda_dev *dev)
2291 {
2292         char *fw;
2293
2294         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2295                 return -EINVAL;
2296
2297         fw = dev->devtype->firmware[dev->firmware];
2298
2299         dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2300                 coda_product_name(dev->devtype->product));
2301
2302         return reject_firmware_nowait(THIS_MODULE, true, fw,
2303                                        &dev->plat_dev->dev, GFP_KERNEL, dev,
2304                                        coda_fw_callback);
2305 }
2306
2307 static void coda_fw_callback(const struct firmware *fw, void *context)
2308 {
2309         struct coda_dev *dev = context;
2310         struct platform_device *pdev = dev->plat_dev;
2311         int i, ret;
2312
2313         if (!fw) {
2314                 dev->firmware++;
2315                 ret = coda_firmware_request(dev);
2316                 if (ret < 0) {
2317                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2318                         goto put_pm;
2319                 }
2320                 return;
2321         }
2322         if (dev->firmware > 0) {
2323                 /*
2324                  * Since we can't suppress warnings for failed asynchronous
2325                  * firmware requests, report that the fallback firmware was
2326                  * found.
2327                  */
2328                 dev_info(&pdev->dev, "Using fallback firmware %s\n",
2329                          dev->devtype->firmware[dev->firmware]);
2330         }
2331
2332         /* allocate auxiliary per-device code buffer for the BIT processor */
2333         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2334                                  dev->debugfs_root);
2335         if (ret < 0)
2336                 goto put_pm;
2337
2338         coda_copy_firmware(dev, fw->data, fw->size);
2339         release_firmware(fw);
2340
2341         ret = coda_hw_init(dev);
2342         if (ret < 0) {
2343                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2344                 goto put_pm;
2345         }
2346
2347         ret = coda_check_firmware(dev);
2348         if (ret < 0)
2349                 goto put_pm;
2350
2351         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
2352         if (IS_ERR(dev->m2m_dev)) {
2353                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
2354                 goto put_pm;
2355         }
2356
2357         for (i = 0; i < dev->devtype->num_vdevs; i++) {
2358                 ret = coda_register_device(dev, i);
2359                 if (ret) {
2360                         v4l2_err(&dev->v4l2_dev,
2361                                  "Failed to register %s video device: %d\n",
2362                                  dev->devtype->vdevs[i]->name, ret);
2363                         goto rel_vfd;
2364                 }
2365         }
2366
2367         v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2368                   dev->vfd[0].num, dev->vfd[i - 1].num);
2369
2370         pm_runtime_put_sync(&pdev->dev);
2371         return;
2372
2373 rel_vfd:
2374         while (--i >= 0)
2375                 video_unregister_device(&dev->vfd[i]);
2376         v4l2_m2m_release(dev->m2m_dev);
2377 put_pm:
2378         pm_runtime_put_sync(&pdev->dev);
2379 }
2380
2381 enum coda_platform {
2382         CODA_IMX27,
2383         CODA_IMX53,
2384         CODA_IMX6Q,
2385         CODA_IMX6DL,
2386 };
2387
2388 static const struct coda_devtype coda_devdata[] = {
2389         [CODA_IMX27] = {
2390                 .firmware     = {
2391                         "/*(DEBLOBBED)*/",
2392                         "/*(DEBLOBBED)*/",
2393                         "/*(DEBLOBBED)*/"
2394                 },
2395                 .product      = CODA_DX6,
2396                 .codecs       = codadx6_codecs,
2397                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
2398                 .vdevs        = codadx6_video_devices,
2399                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
2400                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2401                 .iram_size    = 0xb000,
2402         },
2403         [CODA_IMX53] = {
2404                 .firmware     = {
2405                         "/*(DEBLOBBED)*/",
2406                         "/*(DEBLOBBED)*/",
2407                         "/*(DEBLOBBED)*/"
2408                 },
2409                 .product      = CODA_7541,
2410                 .codecs       = coda7_codecs,
2411                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
2412                 .vdevs        = coda7_video_devices,
2413                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
2414                 .workbuf_size = 128 * 1024,
2415                 .tempbuf_size = 304 * 1024,
2416                 .iram_size    = 0x14000,
2417         },
2418         [CODA_IMX6Q] = {
2419                 .firmware     = {
2420                         "/*(DEBLOBBED)*/",
2421                         "/*(DEBLOBBED)*/",
2422                         "/*(DEBLOBBED)*/"
2423                 },
2424                 .product      = CODA_960,
2425                 .codecs       = coda9_codecs,
2426                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2427                 .vdevs        = coda9_video_devices,
2428                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2429                 .workbuf_size = 80 * 1024,
2430                 .tempbuf_size = 204 * 1024,
2431                 .iram_size    = 0x21000,
2432         },
2433         [CODA_IMX6DL] = {
2434                 .firmware     = {
2435                         "/*(DEBLOBBED)*/",
2436                         "/*(DEBLOBBED)*/",
2437                         "/*(DEBLOBBED)*/"
2438                 },
2439                 .product      = CODA_960,
2440                 .codecs       = coda9_codecs,
2441                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
2442                 .vdevs        = coda9_video_devices,
2443                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
2444                 .workbuf_size = 80 * 1024,
2445                 .tempbuf_size = 204 * 1024,
2446                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
2447         },
2448 };
2449
2450 static const struct platform_device_id coda_platform_ids[] = {
2451         { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2452         { /* sentinel */ }
2453 };
2454 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2455
2456 #ifdef CONFIG_OF
2457 static const struct of_device_id coda_dt_ids[] = {
2458         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2459         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2460         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2461         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2462         { /* sentinel */ }
2463 };
2464 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2465 #endif
2466
2467 static int coda_probe(struct platform_device *pdev)
2468 {
2469         const struct of_device_id *of_id =
2470                         of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2471         const struct platform_device_id *pdev_id;
2472         struct coda_platform_data *pdata = pdev->dev.platform_data;
2473         struct device_node *np = pdev->dev.of_node;
2474         struct gen_pool *pool;
2475         struct coda_dev *dev;
2476         struct resource *res;
2477         int ret, irq;
2478
2479         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2480         if (!dev)
2481                 return -ENOMEM;
2482
2483         pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2484
2485         if (of_id)
2486                 dev->devtype = of_id->data;
2487         else if (pdev_id)
2488                 dev->devtype = &coda_devdata[pdev_id->driver_data];
2489         else
2490                 return -EINVAL;
2491
2492         spin_lock_init(&dev->irqlock);
2493         INIT_LIST_HEAD(&dev->instances);
2494
2495         dev->plat_dev = pdev;
2496         dev->clk_per = devm_clk_get(&pdev->dev, "per");
2497         if (IS_ERR(dev->clk_per)) {
2498                 dev_err(&pdev->dev, "Could not get per clock\n");
2499                 return PTR_ERR(dev->clk_per);
2500         }
2501
2502         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2503         if (IS_ERR(dev->clk_ahb)) {
2504                 dev_err(&pdev->dev, "Could not get ahb clock\n");
2505                 return PTR_ERR(dev->clk_ahb);
2506         }
2507
2508         /* Get  memory for physical registers */
2509         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2510         dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2511         if (IS_ERR(dev->regs_base))
2512                 return PTR_ERR(dev->regs_base);
2513
2514         /* IRQ */
2515         irq = platform_get_irq_byname(pdev, "bit");
2516         if (irq < 0)
2517                 irq = platform_get_irq(pdev, 0);
2518         if (irq < 0) {
2519                 dev_err(&pdev->dev, "failed to get irq resource\n");
2520                 return irq;
2521         }
2522
2523         ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2524                         IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2525         if (ret < 0) {
2526                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2527                 return ret;
2528         }
2529
2530         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
2531                                                               NULL);
2532         if (IS_ERR(dev->rstc)) {
2533                 ret = PTR_ERR(dev->rstc);
2534                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
2535                 return ret;
2536         }
2537
2538         /* Get IRAM pool from device tree or platform data */
2539         pool = of_gen_pool_get(np, "iram", 0);
2540         if (!pool && pdata)
2541                 pool = gen_pool_get(pdata->iram_dev, NULL);
2542         if (!pool) {
2543                 dev_err(&pdev->dev, "iram pool not available\n");
2544                 return -ENOMEM;
2545         }
2546         dev->iram_pool = pool;
2547
2548         /* Get vdoa_data if supported by the platform */
2549         dev->vdoa = coda_get_vdoa_data();
2550         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
2551                 return -EPROBE_DEFER;
2552
2553         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2554         if (ret)
2555                 return ret;
2556
2557         mutex_init(&dev->dev_mutex);
2558         mutex_init(&dev->coda_mutex);
2559
2560         dev->debugfs_root = debugfs_create_dir("coda", NULL);
2561         if (!dev->debugfs_root)
2562                 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2563
2564         /* allocate auxiliary per-device buffers for the BIT processor */
2565         if (dev->devtype->product == CODA_DX6) {
2566                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2567                                          dev->devtype->workbuf_size, "workbuf",
2568                                          dev->debugfs_root);
2569                 if (ret < 0)
2570                         goto err_v4l2_register;
2571         }
2572
2573         if (dev->devtype->tempbuf_size) {
2574                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2575                                          dev->devtype->tempbuf_size, "tempbuf",
2576                                          dev->debugfs_root);
2577                 if (ret < 0)
2578                         goto err_v4l2_register;
2579         }
2580
2581         dev->iram.size = dev->devtype->iram_size;
2582         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2583                                              &dev->iram.paddr);
2584         if (!dev->iram.vaddr) {
2585                 dev_warn(&pdev->dev, "unable to alloc iram\n");
2586         } else {
2587                 memset(dev->iram.vaddr, 0, dev->iram.size);
2588                 dev->iram.blob.data = dev->iram.vaddr;
2589                 dev->iram.blob.size = dev->iram.size;
2590                 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2591                                                        dev->debugfs_root,
2592                                                        &dev->iram.blob);
2593         }
2594
2595         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2596         if (!dev->workqueue) {
2597                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2598                 ret = -ENOMEM;
2599                 goto err_v4l2_register;
2600         }
2601
2602         platform_set_drvdata(pdev, dev);
2603
2604         /*
2605          * Start activated so we can directly call coda_hw_init in
2606          * coda_fw_callback regardless of whether CONFIG_PM is
2607          * enabled or whether the device is associated with a PM domain.
2608          */
2609         pm_runtime_get_noresume(&pdev->dev);
2610         pm_runtime_set_active(&pdev->dev);
2611         pm_runtime_enable(&pdev->dev);
2612
2613         ret = coda_firmware_request(dev);
2614         if (ret)
2615                 goto err_alloc_workqueue;
2616         return 0;
2617
2618 err_alloc_workqueue:
2619         destroy_workqueue(dev->workqueue);
2620 err_v4l2_register:
2621         v4l2_device_unregister(&dev->v4l2_dev);
2622         return ret;
2623 }
2624
2625 static int coda_remove(struct platform_device *pdev)
2626 {
2627         struct coda_dev *dev = platform_get_drvdata(pdev);
2628         int i;
2629
2630         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2631                 if (video_get_drvdata(&dev->vfd[i]))
2632                         video_unregister_device(&dev->vfd[i]);
2633         }
2634         if (dev->m2m_dev)
2635                 v4l2_m2m_release(dev->m2m_dev);
2636         pm_runtime_disable(&pdev->dev);
2637         v4l2_device_unregister(&dev->v4l2_dev);
2638         destroy_workqueue(dev->workqueue);
2639         if (dev->iram.vaddr)
2640                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2641                               dev->iram.size);
2642         coda_free_aux_buf(dev, &dev->codebuf);
2643         coda_free_aux_buf(dev, &dev->tempbuf);
2644         coda_free_aux_buf(dev, &dev->workbuf);
2645         debugfs_remove_recursive(dev->debugfs_root);
2646         return 0;
2647 }
2648
2649 #ifdef CONFIG_PM
2650 static int coda_runtime_resume(struct device *dev)
2651 {
2652         struct coda_dev *cdev = dev_get_drvdata(dev);
2653         int ret = 0;
2654
2655         if (dev->pm_domain && cdev->codebuf.vaddr) {
2656                 ret = coda_hw_init(cdev);
2657                 if (ret)
2658                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2659         }
2660
2661         return ret;
2662 }
2663 #endif
2664
2665 static const struct dev_pm_ops coda_pm_ops = {
2666         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2667 };
2668
2669 static struct platform_driver coda_driver = {
2670         .probe  = coda_probe,
2671         .remove = coda_remove,
2672         .driver = {
2673                 .name   = CODA_NAME,
2674                 .of_match_table = of_match_ptr(coda_dt_ids),
2675                 .pm     = &coda_pm_ops,
2676         },
2677         .id_table = coda_platform_ids,
2678 };
2679
2680 module_platform_driver(coda_driver);
2681
2682 MODULE_LICENSE("GPL");
2683 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2684 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");