drivers/media/platform/coda.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/delay.h>
  16 #include <linux/firmware.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/irq.h>
  20 #include <linux/module.h>
  21 #include <linux/of_device.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/slab.h>
  24 #include <linux/videodev2.h>
  25 #include <linux/of.h>
  26
  27 #include <media/v4l2-ctrls.h>
  28 #include <media/v4l2-device.h>
  29 #include <media/v4l2-ioctl.h>
  30 #include <media/v4l2-mem2mem.h>
  31 #include <media/videobuf2-core.h>
  32 #include <media/videobuf2-dma-contig.h>
  33
  34 #include "coda.h"
  35
  36 #define CODA_NAME               "coda"
  37
  38 #define CODA_MAX_INSTANCES      4
  39
  40 #define CODA_FMO_BUF_SIZE       32
  41 #define CODADX6_WORK_BUF_SIZE   (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
  42 #define CODA7_WORK_BUF_SIZE     (512 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
  43 #define CODA_PARA_BUF_SIZE      (10 * 1024)
  44 #define CODA_ISRAM_SIZE (2048 * 2)
  45
  46 #define CODA_OUTPUT_BUFS        4
  47 #define CODA_CAPTURE_BUFS       2
  48
  49 #define MAX_W           720
  50 #define MAX_H           576
  51 #define CODA_MAX_FRAME_SIZE     0x90000
  52 #define FMO_SLICE_SAVE_BUF_SIZE         (32)
  53 #define CODA_DEFAULT_GAMMA              4096
  54
  55 #define MIN_W 176
  56 #define MIN_H 144
  57 #define MAX_W 720
  58 #define MAX_H 576
  59
  60 #define S_ALIGN         1 /* multiple of 2 */
  61 #define W_ALIGN         1 /* multiple of 2 */
  62 #define H_ALIGN         1 /* multiple of 2 */
  63
  64 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  65
  66 static int coda_debug;
  67 module_param(coda_debug, int, 0);
  68 MODULE_PARM_DESC(coda_debug, "Debug level (0-1)");
  69
  70 enum {
  71         V4L2_M2M_SRC = 0,
  72         V4L2_M2M_DST = 1,
  73 };
  74
  75 enum coda_fmt_type {
  76         CODA_FMT_ENC,
  77         CODA_FMT_RAW,
  78 };
  79
  80 enum coda_inst_type {
  81         CODA_INST_ENCODER,
  82         CODA_INST_DECODER,
  83 };
  84
  85 enum coda_product {
  86         CODA_DX6 = 0xf001,
  87 };
  88
  89 struct coda_fmt {
  90         char *name;
  91         u32 fourcc;
  92         enum coda_fmt_type type;
  93 };
  94
  95 struct coda_devtype {
  96         char                    *firmware;
  97         enum coda_product       product;
  98         struct coda_fmt         *formats;
  99         unsigned int            num_formats;
 100         size_t                  workbuf_size;
 101 };
 102
 103 /* Per-queue, driver-specific private data */
 104 struct coda_q_data {
 105         unsigned int            width;
 106         unsigned int            height;
 107         unsigned int            sizeimage;
 108         struct coda_fmt *fmt;
 109 };
 110
 111 struct coda_aux_buf {
 112         void                    *vaddr;
 113         dma_addr_t              paddr;
 114         u32                     size;
 115 };
 116
 117 struct coda_dev {
 118         struct v4l2_device      v4l2_dev;
 119         struct video_device     vfd;
 120         struct platform_device  *plat_dev;
 121         const struct coda_devtype *devtype;
 122
 123         void __iomem            *regs_base;
 124         struct clk              *clk_per;
 125         struct clk              *clk_ahb;
 126
 127         struct coda_aux_buf     codebuf;
 128         struct coda_aux_buf     workbuf;
 129
 130         spinlock_t              irqlock;
 131         struct mutex            dev_mutex;
 132         struct v4l2_m2m_dev     *m2m_dev;
 133         struct vb2_alloc_ctx    *alloc_ctx;
 134         int                     instances;
 135 };
 136
 137 struct coda_params {
 138         u8                      h264_intra_qp;
 139         u8                      h264_inter_qp;
 140         u8                      mpeg4_intra_qp;
 141         u8                      mpeg4_inter_qp;
 142         u8                      gop_size;
 143         int                     codec_mode;
 144         enum v4l2_mpeg_video_multi_slice_mode slice_mode;
 145         u32                     framerate;
 146         u16                     bitrate;
 147         u32                     slice_max_mb;
 148 };
 149
 150 struct coda_ctx {
 151         struct coda_dev                 *dev;
 152         int                             aborting;
 153         int                             rawstreamon;
 154         int                             compstreamon;
 155         u32                             isequence;
 156         struct coda_q_data              q_data[2];
 157         enum coda_inst_type             inst_type;
 158         enum v4l2_colorspace            colorspace;
 159         struct coda_params              params;
 160         struct v4l2_m2m_ctx             *m2m_ctx;
 161         struct v4l2_ctrl_handler        ctrls;
 162         struct v4l2_fh                  fh;
 163         struct vb2_buffer               *reference;
 164         int                             gopcounter;
 165         char                            vpu_header[3][64];
 166         int                             vpu_header_size[3];
 167         struct coda_aux_buf             parabuf;
 168         int                             idx;
 169 };
 170
 171 static inline void coda_write(struct coda_dev *dev, u32 data, u32 reg)
 172 {
 173         v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
 174                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
 175         writel(data, dev->regs_base + reg);
 176 }
 177
 178 static inline unsigned int coda_read(struct coda_dev *dev, u32 reg)
 179 {
 180         u32 data;
 181         data = readl(dev->regs_base + reg);
 182         v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
 183                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
 184         return data;
 185 }
 186
 187 static inline unsigned long coda_isbusy(struct coda_dev *dev)
 188 {
 189         return coda_read(dev, CODA_REG_BIT_BUSY);
 190 }
 191
 192 static inline int coda_is_initialized(struct coda_dev *dev)
 193 {
 194         return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0);
 195 }
 196
 197 static int coda_wait_timeout(struct coda_dev *dev)
 198 {
 199         unsigned long timeout = jiffies + msecs_to_jiffies(1000);
 200
 201         while (coda_isbusy(dev)) {
 202                 if (time_after(jiffies, timeout))
 203                         return -ETIMEDOUT;
 204         }
 205         return 0;
 206 }
 207
 208 static void coda_command_async(struct coda_ctx *ctx, int cmd)
 209 {
 210         struct coda_dev *dev = ctx->dev;
 211         coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
 212
 213         coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX);
 214         coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
 215         coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
 216 }
 217
 218 static int coda_command_sync(struct coda_ctx *ctx, int cmd)
 219 {
 220         struct coda_dev *dev = ctx->dev;
 221
 222         coda_command_async(ctx, cmd);
 223         return coda_wait_timeout(dev);
 224 }
 225
 226 static struct coda_q_data *get_q_data(struct coda_ctx *ctx,
 227                                          enum v4l2_buf_type type)
 228 {
 229         switch (type) {
 230         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 231                 return &(ctx->q_data[V4L2_M2M_SRC]);
 232         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 233                 return &(ctx->q_data[V4L2_M2M_DST]);
 234         default:
 235                 BUG();
 236         }
 237         return NULL;
 238 }
 239
 240 /*
 241  * Add one array of supported formats for each version of Coda:
 242  *  i.MX27 -> codadx6
 243  *  i.MX51 -> coda7
 244  *  i.MX6  -> coda960
 245  */
 246 static struct coda_fmt codadx6_formats[] = {
 247         {
 248                 .name = "YUV 4:2:0 Planar",
 249                 .fourcc = V4L2_PIX_FMT_YUV420,
 250                 .type = CODA_FMT_RAW,
 251         },
 252         {
 253                 .name = "H264 Encoded Stream",
 254                 .fourcc = V4L2_PIX_FMT_H264,
 255                 .type = CODA_FMT_ENC,
 256         },
 257         {
 258                 .name = "MPEG4 Encoded Stream",
 259                 .fourcc = V4L2_PIX_FMT_MPEG4,
 260                 .type = CODA_FMT_ENC,
 261         },
 262 };
 263
 264 static struct coda_fmt *find_format(struct coda_dev *dev, struct v4l2_format *f)
 265 {
 266         struct coda_fmt *formats = dev->devtype->formats;
 267         int num_formats = dev->devtype->num_formats;
 268         unsigned int k;
 269
 270         for (k = 0; k < num_formats; k++) {
 271                 if (formats[k].fourcc == f->fmt.pix.pixelformat)
 272                         break;
 273         }
 274
 275         if (k == num_formats)
 276                 return NULL;
 277
 278         return &formats[k];
 279 }
 280
 281 /*
 282  * V4L2 ioctl() operations.
 283  */
 284 static int vidioc_querycap(struct file *file, void *priv,
 285                            struct v4l2_capability *cap)
 286 {
 287         strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 288         strlcpy(cap->card, CODA_NAME, sizeof(cap->card));
 289         strlcpy(cap->bus_info, CODA_NAME, sizeof(cap->bus_info));
 290         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
 291                                 | V4L2_CAP_STREAMING;
 292         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 293
 294         return 0;
 295 }
 296
 297 static int enum_fmt(void *priv, struct v4l2_fmtdesc *f,
 298                         enum coda_fmt_type type)
 299 {
 300         struct coda_ctx *ctx = fh_to_ctx(priv);
 301         struct coda_dev *dev = ctx->dev;
 302         struct coda_fmt *formats = dev->devtype->formats;
 303         struct coda_fmt *fmt;
 304         int num_formats = dev->devtype->num_formats;
 305         int i, num = 0;
 306
 307         for (i = 0; i < num_formats; i++) {
 308                 if (formats[i].type == type) {
 309                         if (num == f->index)
 310                                 break;
 311                         ++num;
 312                 }
 313         }
 314
 315         if (i < num_formats) {
 316                 fmt = &formats[i];
 317                 strlcpy(f->description, fmt->name, sizeof(f->description));
 318                 f->pixelformat = fmt->fourcc;
 319                 return 0;
 320         }
 321
 322         /* Format not found */
 323         return -EINVAL;
 324 }
 325
 326 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 327                                    struct v4l2_fmtdesc *f)
 328 {
 329         return enum_fmt(priv, f, CODA_FMT_ENC);
 330 }
 331
 332 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
 333                                    struct v4l2_fmtdesc *f)
 334 {
 335         return enum_fmt(priv, f, CODA_FMT_RAW);
 336 }
 337
 338 static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
 339 {
 340         struct vb2_queue *vq;
 341         struct coda_q_data *q_data;
 342         struct coda_ctx *ctx = fh_to_ctx(priv);
 343
 344         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 345         if (!vq)
 346                 return -EINVAL;
 347
 348         q_data = get_q_data(ctx, f->type);
 349
 350         f->fmt.pix.field        = V4L2_FIELD_NONE;
 351         f->fmt.pix.pixelformat  = q_data->fmt->fourcc;
 352         f->fmt.pix.width        = q_data->width;
 353         f->fmt.pix.height       = q_data->height;
 354         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420)
 355                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2);
 356         else /* encoded formats h.264/mpeg4 */
 357                 f->fmt.pix.bytesperline = 0;
 358
 359         f->fmt.pix.sizeimage    = q_data->sizeimage;
 360         f->fmt.pix.colorspace   = ctx->colorspace;
 361
 362         return 0;
 363 }
 364
 365 static int vidioc_try_fmt(struct coda_dev *dev, struct v4l2_format *f)
 366 {
 367         enum v4l2_field field;
 368
 369         field = f->fmt.pix.field;
 370         if (field == V4L2_FIELD_ANY)
 371                 field = V4L2_FIELD_NONE;
 372         else if (V4L2_FIELD_NONE != field)
 373                 return -EINVAL;
 374
 375         /* V4L2 specification suggests the driver corrects the format struct
 376          * if any of the dimensions is unsupported */
 377         f->fmt.pix.field = field;
 378
 379         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) {
 380                 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W,
 381                                       W_ALIGN, &f->fmt.pix.height,
 382                                       MIN_H, MAX_H, H_ALIGN, S_ALIGN);
 383                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2);
 384                 f->fmt.pix.sizeimage = f->fmt.pix.height *
 385                                         f->fmt.pix.bytesperline;
 386         } else { /*encoded formats h.264/mpeg4 */
 387                 f->fmt.pix.bytesperline = 0;
 388                 f->fmt.pix.sizeimage = CODA_MAX_FRAME_SIZE;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 395                                   struct v4l2_format *f)
 396 {
 397         int ret;
 398         struct coda_fmt *fmt;
 399         struct coda_ctx *ctx = fh_to_ctx(priv);
 400
 401         fmt = find_format(ctx->dev, f);
 402         /*
 403          * Since decoding support is not implemented yet do not allow
 404          * CODA_FMT_RAW formats in the capture interface.
 405          */
 406         if (!fmt || !(fmt->type == CODA_FMT_ENC))
 407                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_H264;
 408
 409         f->fmt.pix.colorspace = ctx->colorspace;
 410
 411         ret = vidioc_try_fmt(ctx->dev, f);
 412         if (ret < 0)
 413                 return ret;
 414
 415         return 0;
 416 }
 417
 418 static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
 419                                   struct v4l2_format *f)
 420 {
 421         struct coda_ctx *ctx = fh_to_ctx(priv);
 422         struct coda_fmt *fmt;
 423         int ret;
 424
 425         fmt = find_format(ctx->dev, f);
 426         /*
 427          * Since decoding support is not implemented yet do not allow
 428          * CODA_FMT formats in the capture interface.
 429          */
 430         if (!fmt || !(fmt->type == CODA_FMT_RAW))
 431                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
 432
 433         if (!f->fmt.pix.colorspace)
 434                 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
 435
 436         ret = vidioc_try_fmt(ctx->dev, f);
 437         if (ret < 0)
 438                 return ret;
 439
 440         return 0;
 441 }
 442
 443 static int vidioc_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
 444 {
 445         struct coda_q_data *q_data;
 446         struct vb2_queue *vq;
 447         int ret;
 448
 449         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
 450         if (!vq)
 451                 return -EINVAL;
 452
 453         q_data = get_q_data(ctx, f->type);
 454         if (!q_data)
 455                 return -EINVAL;
 456
 457         if (vb2_is_busy(vq)) {
 458                 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
 459                 return -EBUSY;
 460         }
 461
 462         ret = vidioc_try_fmt(ctx->dev, f);
 463         if (ret)
 464                 return ret;
 465
 466         q_data->fmt = find_format(ctx->dev, f);
 467         q_data->width = f->fmt.pix.width;
 468         q_data->height = f->fmt.pix.height;
 469         if (q_data->fmt->fourcc == V4L2_PIX_FMT_YUV420) {
 470                 q_data->sizeimage = q_data->width * q_data->height * 3 / 2;
 471         } else { /* encoded format h.264/mpeg-4 */
 472                 q_data->sizeimage = CODA_MAX_FRAME_SIZE;
 473         }
 474
 475         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 476                 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
 477                 f->type, q_data->width, q_data->height, q_data->fmt->fourcc);
 478
 479         return 0;
 480 }
 481
 482 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 483                                 struct v4l2_format *f)
 484 {
 485         int ret;
 486
 487         ret = vidioc_try_fmt_vid_cap(file, priv, f);
 488         if (ret)
 489                 return ret;
 490
 491         return vidioc_s_fmt(fh_to_ctx(priv), f);
 492 }
 493
 494 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
 495                                 struct v4l2_format *f)
 496 {
 497         struct coda_ctx *ctx = fh_to_ctx(priv);
 498         int ret;
 499
 500         ret = vidioc_try_fmt_vid_out(file, priv, f);
 501         if (ret)
 502                 return ret;
 503
 504         ret = vidioc_s_fmt(ctx, f);
 505         if (ret)
 506                 ctx->colorspace = f->fmt.pix.colorspace;
 507
 508         return ret;
 509 }
 510
 511 static int vidioc_reqbufs(struct file *file, void *priv,
 512                           struct v4l2_requestbuffers *reqbufs)
 513 {
 514         struct coda_ctx *ctx = fh_to_ctx(priv);
 515
 516         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
 517 }
 518
 519 static int vidioc_querybuf(struct file *file, void *priv,
 520                            struct v4l2_buffer *buf)
 521 {
 522         struct coda_ctx *ctx = fh_to_ctx(priv);
 523
 524         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
 525 }
 526
 527 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 528 {
 529         struct coda_ctx *ctx = fh_to_ctx(priv);
 530
 531         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 532 }
 533
 534 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 535 {
 536         struct coda_ctx *ctx = fh_to_ctx(priv);
 537
 538         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
 539 }
 540
 541 static int vidioc_streamon(struct file *file, void *priv,
 542                            enum v4l2_buf_type type)
 543 {
 544         struct coda_ctx *ctx = fh_to_ctx(priv);
 545
 546         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
 547 }
 548
 549 static int vidioc_streamoff(struct file *file, void *priv,
 550                             enum v4l2_buf_type type)
 551 {
 552         struct coda_ctx *ctx = fh_to_ctx(priv);
 553
 554         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
 555 }
 556
 557 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
 558         .vidioc_querycap        = vidioc_querycap,
 559
 560         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
 561         .vidioc_g_fmt_vid_cap   = vidioc_g_fmt,
 562         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
 563         .vidioc_s_fmt_vid_cap   = vidioc_s_fmt_vid_cap,
 564
 565         .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
 566         .vidioc_g_fmt_vid_out   = vidioc_g_fmt,
 567         .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
 568         .vidioc_s_fmt_vid_out   = vidioc_s_fmt_vid_out,
 569
 570         .vidioc_reqbufs         = vidioc_reqbufs,
 571         .vidioc_querybuf        = vidioc_querybuf,
 572
 573         .vidioc_qbuf            = vidioc_qbuf,
 574         .vidioc_dqbuf           = vidioc_dqbuf,
 575
 576         .vidioc_streamon        = vidioc_streamon,
 577         .vidioc_streamoff       = vidioc_streamoff,
 578 };
 579
 580 /*
 581  * Mem-to-mem operations.
 582  */
 583 static void coda_device_run(void *m2m_priv)
 584 {
 585         struct coda_ctx *ctx = m2m_priv;
 586         struct coda_q_data *q_data_src, *q_data_dst;
 587         struct vb2_buffer *src_buf, *dst_buf;
 588         struct coda_dev *dev = ctx->dev;
 589         int force_ipicture;
 590         int quant_param = 0;
 591         u32 picture_y, picture_cb, picture_cr;
 592         u32 pic_stream_buffer_addr, pic_stream_buffer_size;
 593         u32 dst_fourcc;
 594
 595         src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
 596         dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 597         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 598         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 599         dst_fourcc = q_data_dst->fmt->fourcc;
 600
 601         src_buf->v4l2_buf.sequence = ctx->isequence;
 602         dst_buf->v4l2_buf.sequence = ctx->isequence;
 603         ctx->isequence++;
 604
 605         /*
 606          * Workaround coda firmware BUG that only marks the first
 607          * frame as IDR. This is a problem for some decoders that can't
 608          * recover when a frame is lost.
 609          */
 610         if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) {
 611                 src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
 612                 src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
 613         } else {
 614                 src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
 615                 src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
 616         }
 617
 618         /*
 619          * Copy headers at the beginning of the first frame for H.264 only.
 620          * In MPEG4 they are already copied by the coda.
 621          */
 622         if (src_buf->v4l2_buf.sequence == 0) {
 623                 pic_stream_buffer_addr =
 624                         vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
 625                         ctx->vpu_header_size[0] +
 626                         ctx->vpu_header_size[1] +
 627                         ctx->vpu_header_size[2];
 628                 pic_stream_buffer_size = CODA_MAX_FRAME_SIZE -
 629                         ctx->vpu_header_size[0] -
 630                         ctx->vpu_header_size[1] -
 631                         ctx->vpu_header_size[2];
 632                 memcpy(vb2_plane_vaddr(dst_buf, 0),
 633                        &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
 634                 memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0],
 635                        &ctx->vpu_header[1][0], ctx->vpu_header_size[1]);
 636                 memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] +
 637                         ctx->vpu_header_size[1], &ctx->vpu_header[2][0],
 638                         ctx->vpu_header_size[2]);
 639         } else {
 640                 pic_stream_buffer_addr =
 641                         vb2_dma_contig_plane_dma_addr(dst_buf, 0);
 642                 pic_stream_buffer_size = CODA_MAX_FRAME_SIZE;
 643         }
 644
 645         if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
 646                 force_ipicture = 1;
 647                 switch (dst_fourcc) {
 648                 case V4L2_PIX_FMT_H264:
 649                         quant_param = ctx->params.h264_intra_qp;
 650                         break;
 651                 case V4L2_PIX_FMT_MPEG4:
 652                         quant_param = ctx->params.mpeg4_intra_qp;
 653                         break;
 654                 default:
 655                         v4l2_warn(&ctx->dev->v4l2_dev,
 656                                 "cannot set intra qp, fmt not supported\n");
 657                         break;
 658                 }
 659         } else {
 660                 force_ipicture = 0;
 661                 switch (dst_fourcc) {
 662                 case V4L2_PIX_FMT_H264:
 663                         quant_param = ctx->params.h264_inter_qp;
 664                         break;
 665                 case V4L2_PIX_FMT_MPEG4:
 666                         quant_param = ctx->params.mpeg4_inter_qp;
 667                         break;
 668                 default:
 669                         v4l2_warn(&ctx->dev->v4l2_dev,
 670                                 "cannot set inter qp, fmt not supported\n");
 671                         break;
 672                 }
 673         }
 674
 675         /* submit */
 676         coda_write(dev, 0, CODA_CMD_ENC_PIC_ROT_MODE);
 677         coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
 678
 679
 680         picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
 681         picture_cb = picture_y + q_data_src->width * q_data_src->height;
 682         picture_cr = picture_cb + q_data_src->width / 2 *
 683                         q_data_src->height / 2;
 684
 685         coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
 686         coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
 687         coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
 688         coda_write(dev, force_ipicture << 1 & 0x2,
 689                    CODA_CMD_ENC_PIC_OPTION);
 690
 691         coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
 692         coda_write(dev, pic_stream_buffer_size / 1024,
 693                    CODA_CMD_ENC_PIC_BB_SIZE);
 694         coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
 695 }
 696
 697 static int coda_job_ready(void *m2m_priv)
 698 {
 699         struct coda_ctx *ctx = m2m_priv;
 700
 701         /*
 702          * For both 'P' and 'key' frame cases 1 picture
 703          * and 1 frame are needed.
 704          */
 705         if (!v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) ||
 706                 !v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx)) {
 707                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 708                          "not ready: not enough video buffers.\n");
 709                 return 0;
 710         }
 711
 712         /* For P frames a reference picture is needed too */
 713         if ((ctx->gopcounter != (ctx->params.gop_size - 1)) &&
 714            !ctx->reference) {
 715                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 716                          "not ready: reference picture not available.\n");
 717                 return 0;
 718         }
 719
 720         if (coda_isbusy(ctx->dev)) {
 721                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 722                          "not ready: coda is still busy.\n");
 723                 return 0;
 724         }
 725
 726         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 727                         "job ready\n");
 728         return 1;
 729 }
 730
 731 static void coda_job_abort(void *priv)
 732 {
 733         struct coda_ctx *ctx = priv;
 734         struct coda_dev *dev = ctx->dev;
 735
 736         ctx->aborting = 1;
 737
 738         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 739                  "Aborting task\n");
 740
 741         v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
 742 }
 743
 744 static void coda_lock(void *m2m_priv)
 745 {
 746         struct coda_ctx *ctx = m2m_priv;
 747         struct coda_dev *pcdev = ctx->dev;
 748         mutex_lock(&pcdev->dev_mutex);
 749 }
 750
 751 static void coda_unlock(void *m2m_priv)
 752 {
 753         struct coda_ctx *ctx = m2m_priv;
 754         struct coda_dev *pcdev = ctx->dev;
 755         mutex_unlock(&pcdev->dev_mutex);
 756 }
 757
 758 static struct v4l2_m2m_ops coda_m2m_ops = {
 759         .device_run     = coda_device_run,
 760         .job_ready      = coda_job_ready,
 761         .job_abort      = coda_job_abort,
 762         .lock           = coda_lock,
 763         .unlock         = coda_unlock,
 764 };
 765
 766 static void set_default_params(struct coda_ctx *ctx)
 767 {
 768         struct coda_dev *dev = ctx->dev;
 769
 770         ctx->params.codec_mode = CODA_MODE_INVALID;
 771         ctx->colorspace = V4L2_COLORSPACE_REC709;
 772         ctx->params.framerate = 30;
 773         ctx->reference = NULL;
 774         ctx->aborting = 0;
 775
 776         /* Default formats for output and input queues */
 777         ctx->q_data[V4L2_M2M_SRC].fmt = &dev->devtype->formats[0];
 778         ctx->q_data[V4L2_M2M_DST].fmt = &dev->devtype->formats[1];
 779         ctx->q_data[V4L2_M2M_SRC].width = MAX_W;
 780         ctx->q_data[V4L2_M2M_SRC].height = MAX_H;
 781         ctx->q_data[V4L2_M2M_SRC].sizeimage = (MAX_W * MAX_H * 3) / 2;
 782         ctx->q_data[V4L2_M2M_DST].width = MAX_W;
 783         ctx->q_data[V4L2_M2M_DST].height = MAX_H;
 784         ctx->q_data[V4L2_M2M_DST].sizeimage = CODA_MAX_FRAME_SIZE;
 785 }
 786
 787 /*
 788  * Queue operations
 789  */
 790 static int coda_queue_setup(struct vb2_queue *vq,
 791                                 const struct v4l2_format *fmt,
 792                                 unsigned int *nbuffers, unsigned int *nplanes,
 793                                 unsigned int sizes[], void *alloc_ctxs[])
 794 {
 795         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
 796         unsigned int size;
 797
 798         if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 799                 *nbuffers = CODA_OUTPUT_BUFS;
 800                 if (fmt)
 801                         size = fmt->fmt.pix.width *
 802                                 fmt->fmt.pix.height * 3 / 2;
 803                 else
 804                         size = MAX_W *
 805                                 MAX_H * 3 / 2;
 806         } else {
 807                 *nbuffers = CODA_CAPTURE_BUFS;
 808                 size = CODA_MAX_FRAME_SIZE;
 809         }
 810
 811         *nplanes = 1;
 812         sizes[0] = size;
 813
 814         alloc_ctxs[0] = ctx->dev->alloc_ctx;
 815
 816         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 817                  "get %d buffer(s) of size %d each.\n", *nbuffers, size);
 818
 819         return 0;
 820 }
 821
 822 static int coda_buf_prepare(struct vb2_buffer *vb)
 823 {
 824         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 825         struct coda_q_data *q_data;
 826
 827         q_data = get_q_data(ctx, vb->vb2_queue->type);
 828
 829         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
 830                 v4l2_warn(&ctx->dev->v4l2_dev,
 831                           "%s data will not fit into plane (%lu < %lu)\n",
 832                           __func__, vb2_plane_size(vb, 0),
 833                           (long)q_data->sizeimage);
 834                 return -EINVAL;
 835         }
 836
 837         vb2_set_plane_payload(vb, 0, q_data->sizeimage);
 838
 839         return 0;
 840 }
 841
 842 static void coda_buf_queue(struct vb2_buffer *vb)
 843 {
 844         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 845         v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
 846 }
 847
 848 static void coda_wait_prepare(struct vb2_queue *q)
 849 {
 850         struct coda_ctx *ctx = vb2_get_drv_priv(q);
 851         coda_unlock(ctx);
 852 }
 853
 854 static void coda_wait_finish(struct vb2_queue *q)
 855 {
 856         struct coda_ctx *ctx = vb2_get_drv_priv(q);
 857         coda_lock(ctx);
 858 }
 859
 860 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
 861 {
 862         struct coda_ctx *ctx = vb2_get_drv_priv(q);
 863         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
 864         u32 bitstream_buf, bitstream_size;
 865         struct coda_dev *dev = ctx->dev;
 866         struct coda_q_data *q_data_src, *q_data_dst;
 867         u32 dst_fourcc;
 868         struct vb2_buffer *buf;
 869         struct vb2_queue *src_vq;
 870         u32 value;
 871         int i = 0;
 872
 873         if (count < 1)
 874                 return -EINVAL;
 875
 876         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 877                 ctx->rawstreamon = 1;
 878         else
 879                 ctx->compstreamon = 1;
 880
 881         /* Don't start the coda unless both queues are on */
 882         if (!(ctx->rawstreamon & ctx->compstreamon))
 883                 return 0;
 884
 885         ctx->gopcounter = ctx->params.gop_size - 1;
 886
 887         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 888         buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
 889         bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
 890         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 891         bitstream_size = q_data_dst->sizeimage;
 892         dst_fourcc = q_data_dst->fmt->fourcc;
 893
 894         /* Find out whether coda must encode or decode */
 895         if (q_data_src->fmt->type == CODA_FMT_RAW &&
 896             q_data_dst->fmt->type == CODA_FMT_ENC) {
 897                 ctx->inst_type = CODA_INST_ENCODER;
 898         } else if (q_data_src->fmt->type == CODA_FMT_ENC &&
 899                    q_data_dst->fmt->type == CODA_FMT_RAW) {
 900                 ctx->inst_type = CODA_INST_DECODER;
 901                 v4l2_err(v4l2_dev, "decoding not supported.\n");
 902                 return -EINVAL;
 903         } else {
 904                 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
 905                 return -EINVAL;
 906         }
 907
 908         if (!coda_is_initialized(dev)) {
 909                 v4l2_err(v4l2_dev, "coda is not initialized.\n");
 910                 return -EFAULT;
 911         }
 912         coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
 913         coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->idx));
 914         coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->idx));
 915         switch (dev->devtype->product) {
 916         case CODA_DX6:
 917                 coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN |
 918                         CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
 919                 break;
 920         default:
 921                 coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
 922                         CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
 923         }
 924
 925         /* Configure the coda */
 926         coda_write(dev, 0xffff4c00, CODA_REG_BIT_SEARCH_RAM_BASE_ADDR);
 927
 928         /* Could set rotation here if needed */
 929         switch (dev->devtype->product) {
 930         case CODA_DX6:
 931                 value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET;
 932                 break;
 933         default:
 934                 value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
 935         }
 936         value |= (q_data_src->height & CODA_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
 937         coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
 938         coda_write(dev, ctx->params.framerate,
 939                    CODA_CMD_ENC_SEQ_SRC_F_RATE);
 940
 941         switch (dst_fourcc) {
 942         case V4L2_PIX_FMT_MPEG4:
 943                 if (dev->devtype->product == CODA_DX6)
 944                         ctx->params.codec_mode = CODADX6_MODE_ENCODE_MP4;
 945                 else
 946                         ctx->params.codec_mode = CODA7_MODE_ENCODE_MP4;
 947
 948                 coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
 949                 coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA);
 950                 break;
 951         case V4L2_PIX_FMT_H264:
 952                 if (dev->devtype->product == CODA_DX6)
 953                         ctx->params.codec_mode = CODADX6_MODE_ENCODE_H264;
 954                 else
 955                         ctx->params.codec_mode = CODA7_MODE_ENCODE_H264;
 956
 957                 coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
 958                 coda_write(dev, 0, CODA_CMD_ENC_SEQ_264_PARA);
 959                 break;
 960         default:
 961                 v4l2_err(v4l2_dev,
 962                          "dst format (0x%08x) invalid.\n", dst_fourcc);
 963                 return -EINVAL;
 964         }
 965
 966         value  = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
 967         value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
 968         if (ctx->params.slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB)
 969                 value |=  1 & CODA_SLICING_MODE_MASK;
 970         coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
 971         value  =  ctx->params.gop_size & CODA_GOP_SIZE_MASK;
 972         coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
 973
 974         if (ctx->params.bitrate) {
 975                 /* Rate control enabled */
 976                 value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET;
 977                 value |=  1 & CODA_RATECONTROL_ENABLE_MASK;
 978         } else {
 979                 value = 0;
 980         }
 981         coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
 982
 983         coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
 984         coda_write(dev, 0, CODA_CMD_ENC_SEQ_INTRA_REFRESH);
 985
 986         coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
 987         coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
 988
 989         /* set default gamma */
 990         value = (CODA_DEFAULT_GAMMA & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET;
 991         coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_GAMMA);
 992
 993         value  = (CODA_DEFAULT_GAMMA > 0) << CODA_OPTION_GAMMA_OFFSET;
 994         value |= (0 & CODA_OPTION_SLICEREPORT_MASK) << CODA_OPTION_SLICEREPORT_OFFSET;
 995         coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION);
 996
 997         if (dst_fourcc == V4L2_PIX_FMT_H264) {
 998                 value  = (FMO_SLICE_SAVE_BUF_SIZE << 7);
 999                 value |= (0 & CODA_FMOPARAM_TYPE_MASK) << CODA_FMOPARAM_TYPE_OFFSET;
1000                 value |=  0 & CODA_FMOPARAM_SLICENUM_MASK;
1001                 coda_write(dev, value, CODA_CMD_ENC_SEQ_FMO);
1002         }
1003
1004         if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
1005                 v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
1006                 return -ETIMEDOUT;
1007         }
1008
1009         if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0)
1010                 return -EFAULT;
1011
1012         /*
1013          * Walk the src buffer list and let the codec know the
1014          * addresses of the pictures.
1015          */
1016         src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1017         for (i = 0; i < src_vq->num_buffers; i++) {
1018                 u32 *p;
1019
1020                 buf = src_vq->bufs[i];
1021                 p = ctx->parabuf.vaddr;
1022
1023                 p[i * 3] = vb2_dma_contig_plane_dma_addr(buf, 0);
1024                 p[i * 3 + 1] = p[i * 3] + q_data_src->width *
1025                                 q_data_src->height;
1026                 p[i * 3 + 2] = p[i * 3 + 1] + q_data_src->width / 2 *
1027                                 q_data_src->height / 2;
1028         }
1029
1030         coda_write(dev, src_vq->num_buffers, CODA_CMD_SET_FRAME_BUF_NUM);
1031         coda_write(dev, q_data_src->width, CODA_CMD_SET_FRAME_BUF_STRIDE);
1032         if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
1033                 v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
1034                 return -ETIMEDOUT;
1035         }
1036
1037         /* Save stream headers */
1038         buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
1039         switch (dst_fourcc) {
1040         case V4L2_PIX_FMT_H264:
1041                 /*
1042                  * Get SPS in the first frame and copy it to an
1043                  * intermediate buffer.
1044                  */
1045                 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
1046                 coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
1047                 coda_write(dev, CODA_HEADER_H264_SPS, CODA_CMD_ENC_HEADER_CODE);
1048                 if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
1049                         v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
1050                         return -ETIMEDOUT;
1051                 }
1052                 ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
1053                                 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1054                 memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0),
1055                        ctx->vpu_header_size[0]);
1056
1057                 /*
1058                  * Get PPS in the first frame and copy it to an
1059                  * intermediate buffer.
1060                  */
1061                 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
1062                 coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
1063                 coda_write(dev, CODA_HEADER_H264_PPS, CODA_CMD_ENC_HEADER_CODE);
1064                 if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
1065                         v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
1066                         return -ETIMEDOUT;
1067                 }
1068                 ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
1069                                 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1070                 memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0),
1071                        ctx->vpu_header_size[1]);
1072                 ctx->vpu_header_size[2] = 0;
1073                 break;
1074         case V4L2_PIX_FMT_MPEG4:
1075                 /*
1076                  * Get VOS in the first frame and copy it to an
1077                  * intermediate buffer
1078                  */
1079                 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
1080                 coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
1081                 coda_write(dev, CODA_HEADER_MP4V_VOS, CODA_CMD_ENC_HEADER_CODE);
1082                 if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
1083                         v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
1084                         return -ETIMEDOUT;
1085                 }
1086                 ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
1087                                 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1088                 memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0),
1089                        ctx->vpu_header_size[0]);
1090
1091                 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
1092                 coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
1093                 coda_write(dev, CODA_HEADER_MP4V_VIS, CODA_CMD_ENC_HEADER_CODE);
1094                 if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
1095                         v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n");
1096                         return -ETIMEDOUT;
1097                 }
1098                 ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
1099                                 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1100                 memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0),
1101                        ctx->vpu_header_size[1]);
1102
1103                 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
1104                 coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
1105                 coda_write(dev, CODA_HEADER_MP4V_VOL, CODA_CMD_ENC_HEADER_CODE);
1106                 if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
1107                         v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n");
1108                         return -ETIMEDOUT;
1109                 }
1110                 ctx->vpu_header_size[2] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
1111                                 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1112                 memcpy(&ctx->vpu_header[2][0], vb2_plane_vaddr(buf, 0),
1113                        ctx->vpu_header_size[2]);
1114                 break;
1115         default:
1116                 /* No more formats need to save headers at the moment */
1117                 break;
1118         }
1119
1120         return 0;
1121 }
1122
1123 static int coda_stop_streaming(struct vb2_queue *q)
1124 {
1125         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1126
1127         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1128                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1129                          "%s: output\n", __func__);
1130                 ctx->rawstreamon = 0;
1131         } else {
1132                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1133                          "%s: capture\n", __func__);
1134                 ctx->compstreamon = 0;
1135         }
1136
1137         if (!ctx->rawstreamon && !ctx->compstreamon) {
1138                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1139                          "%s: sent command 'SEQ_END' to coda\n", __func__);
1140                 if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
1141                         v4l2_err(&ctx->dev->v4l2_dev,
1142                                  "CODA_COMMAND_SEQ_END failed\n");
1143                         return -ETIMEDOUT;
1144                 }
1145         }
1146
1147         return 0;
1148 }
1149
1150 static struct vb2_ops coda_qops = {
1151         .queue_setup            = coda_queue_setup,
1152         .buf_prepare            = coda_buf_prepare,
1153         .buf_queue              = coda_buf_queue,
1154         .wait_prepare           = coda_wait_prepare,
1155         .wait_finish            = coda_wait_finish,
1156         .start_streaming        = coda_start_streaming,
1157         .stop_streaming         = coda_stop_streaming,
1158 };
1159
1160 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1161 {
1162         struct coda_ctx *ctx =
1163                         container_of(ctrl->handler, struct coda_ctx, ctrls);
1164
1165         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1166                  "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1167
1168         switch (ctrl->id) {
1169         case V4L2_CID_MPEG_VIDEO_BITRATE:
1170                 ctx->params.bitrate = ctrl->val / 1000;
1171                 break;
1172         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1173                 ctx->params.gop_size = ctrl->val;
1174                 break;
1175         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1176                 ctx->params.h264_intra_qp = ctrl->val;
1177                 break;
1178         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1179                 ctx->params.h264_inter_qp = ctrl->val;
1180                 break;
1181         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1182                 ctx->params.mpeg4_intra_qp = ctrl->val;
1183                 break;
1184         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1185                 ctx->params.mpeg4_inter_qp = ctrl->val;
1186                 break;
1187         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1188                 ctx->params.slice_mode = ctrl->val;
1189                 break;
1190         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1191                 ctx->params.slice_max_mb = ctrl->val;
1192                 break;
1193         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1194                 break;
1195         default:
1196                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1197                         "Invalid control, id=%d, val=%d\n",
1198                         ctrl->id, ctrl->val);
1199                 return -EINVAL;
1200         }
1201
1202         return 0;
1203 }
1204
1205 static struct v4l2_ctrl_ops coda_ctrl_ops = {
1206         .s_ctrl = coda_s_ctrl,
1207 };
1208
1209 static int coda_ctrls_setup(struct coda_ctx *ctx)
1210 {
1211         v4l2_ctrl_handler_init(&ctx->ctrls, 9);
1212
1213         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1214                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1, 0);
1215         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1216                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
1217         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1218                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 1, 51, 1, 25);
1219         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1220                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 1, 51, 1, 25);
1221         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1222                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1223         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1224                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1225         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1226                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1227                 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB, 0,
1228                 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB);
1229         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1230                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1231         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1232                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1233                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1234                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1235                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1236
1237         if (ctx->ctrls.error) {
1238                 v4l2_err(&ctx->dev->v4l2_dev, "control initialization error (%d)",
1239                         ctx->ctrls.error);
1240                 return -EINVAL;
1241         }
1242
1243         return v4l2_ctrl_handler_setup(&ctx->ctrls);
1244 }
1245
1246 static int coda_queue_init(void *priv, struct vb2_queue *src_vq,
1247                       struct vb2_queue *dst_vq)
1248 {
1249         struct coda_ctx *ctx = priv;
1250         int ret;
1251
1252         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1253         src_vq->io_modes = VB2_MMAP;
1254         src_vq->drv_priv = ctx;
1255         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1256         src_vq->ops = &coda_qops;
1257         src_vq->mem_ops = &vb2_dma_contig_memops;
1258
1259         ret = vb2_queue_init(src_vq);
1260         if (ret)
1261                 return ret;
1262
1263         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1264         dst_vq->io_modes = VB2_MMAP;
1265         dst_vq->drv_priv = ctx;
1266         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1267         dst_vq->ops = &coda_qops;
1268         dst_vq->mem_ops = &vb2_dma_contig_memops;
1269
1270         return vb2_queue_init(dst_vq);
1271 }
1272
1273 static int coda_open(struct file *file)
1274 {
1275         struct coda_dev *dev = video_drvdata(file);
1276         struct coda_ctx *ctx = NULL;
1277         int ret = 0;
1278
1279         if (dev->instances >= CODA_MAX_INSTANCES)
1280                 return -EBUSY;
1281
1282         ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
1283         if (!ctx)
1284                 return -ENOMEM;
1285
1286         v4l2_fh_init(&ctx->fh, video_devdata(file));
1287         file->private_data = &ctx->fh;
1288         v4l2_fh_add(&ctx->fh);
1289         ctx->dev = dev;
1290
1291         set_default_params(ctx);
1292         ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
1293                                          &coda_queue_init);
1294         if (IS_ERR(ctx->m2m_ctx)) {
1295                 int ret = PTR_ERR(ctx->m2m_ctx);
1296
1297                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
1298                          __func__, ret);
1299                 goto err;
1300         }
1301         ret = coda_ctrls_setup(ctx);
1302         if (ret) {
1303                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
1304                 goto err;
1305         }
1306
1307         ctx->fh.ctrl_handler = &ctx->ctrls;
1308
1309         ctx->parabuf.vaddr = dma_alloc_coherent(&dev->plat_dev->dev,
1310                         CODA_PARA_BUF_SIZE, &ctx->parabuf.paddr, GFP_KERNEL);
1311         if (!ctx->parabuf.vaddr) {
1312                 v4l2_err(&dev->v4l2_dev, "failed to allocate parabuf");
1313                 ret = -ENOMEM;
1314                 goto err;
1315         }
1316
1317         coda_lock(ctx);
1318         ctx->idx = dev->instances++;
1319         coda_unlock(ctx);
1320
1321         clk_prepare_enable(dev->clk_per);
1322         clk_prepare_enable(dev->clk_ahb);
1323
1324         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
1325                  ctx->idx, ctx);
1326
1327         return 0;
1328
1329 err:
1330         v4l2_fh_del(&ctx->fh);
1331         v4l2_fh_exit(&ctx->fh);
1332         kfree(ctx);
1333         return ret;
1334 }
1335
1336 static int coda_release(struct file *file)
1337 {
1338         struct coda_dev *dev = video_drvdata(file);
1339         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1340
1341         v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
1342                  ctx);
1343
1344         coda_lock(ctx);
1345         dev->instances--;
1346         coda_unlock(ctx);
1347
1348         dma_free_coherent(&dev->plat_dev->dev, CODA_PARA_BUF_SIZE,
1349                 ctx->parabuf.vaddr, ctx->parabuf.paddr);
1350         v4l2_m2m_ctx_release(ctx->m2m_ctx);
1351         v4l2_ctrl_handler_free(&ctx->ctrls);
1352         clk_disable_unprepare(dev->clk_per);
1353         clk_disable_unprepare(dev->clk_ahb);
1354         v4l2_fh_del(&ctx->fh);
1355         v4l2_fh_exit(&ctx->fh);
1356         kfree(ctx);
1357
1358         return 0;
1359 }
1360
1361 static unsigned int coda_poll(struct file *file,
1362                                  struct poll_table_struct *wait)
1363 {
1364         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1365         int ret;
1366
1367         coda_lock(ctx);
1368         ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
1369         coda_unlock(ctx);
1370         return ret;
1371 }
1372
1373 static int coda_mmap(struct file *file, struct vm_area_struct *vma)
1374 {
1375         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1376
1377         return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
1378 }
1379
1380 static const struct v4l2_file_operations coda_fops = {
1381         .owner          = THIS_MODULE,
1382         .open           = coda_open,
1383         .release        = coda_release,
1384         .poll           = coda_poll,
1385         .unlocked_ioctl = video_ioctl2,
1386         .mmap           = coda_mmap,
1387 };
1388
1389 static irqreturn_t coda_irq_handler(int irq, void *data)
1390 {
1391         struct vb2_buffer *src_buf, *dst_buf, *tmp_buf;
1392         struct coda_dev *dev = data;
1393         u32 wr_ptr, start_ptr;
1394         struct coda_ctx *ctx;
1395
1396         /* read status register to attend the IRQ */
1397         coda_read(dev, CODA_REG_BIT_INT_STATUS);
1398         coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET,
1399                       CODA_REG_BIT_INT_CLEAR);
1400
1401         ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
1402         if (ctx == NULL) {
1403                 v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n");
1404                 return IRQ_HANDLED;
1405         }
1406
1407         if (ctx->aborting) {
1408                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1409                          "task has been aborted\n");
1410                 return IRQ_HANDLED;
1411         }
1412
1413         if (coda_isbusy(ctx->dev)) {
1414                 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1415                          "coda is still busy!!!!\n");
1416                 return IRQ_NONE;
1417         }
1418
1419         src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
1420         dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
1421
1422         /* Get results from the coda */
1423         coda_read(dev, CODA_RET_ENC_PIC_TYPE);
1424         start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
1425         wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx));
1426         /* Calculate bytesused field */
1427         if (dst_buf->v4l2_buf.sequence == 0) {
1428                 dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr) +
1429                                                 ctx->vpu_header_size[0] +
1430                                                 ctx->vpu_header_size[1] +
1431                                                 ctx->vpu_header_size[2];
1432         } else {
1433                 dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr);
1434         }
1435
1436         v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n",
1437                  wr_ptr - start_ptr);
1438
1439         coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM);
1440         coda_read(dev, CODA_RET_ENC_PIC_FLAG);
1441
1442         if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
1443                 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
1444                 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
1445         } else {
1446                 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
1447                 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
1448         }
1449
1450         /* Free previous reference picture if available */
1451         if (ctx->reference) {
1452                 v4l2_m2m_buf_done(ctx->reference, VB2_BUF_STATE_DONE);
1453                 ctx->reference = NULL;
1454         }
1455
1456         /*
1457          * For the last frame of the gop we don't need to save
1458          * a reference picture.
1459          */
1460         v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
1461         tmp_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
1462         if (ctx->gopcounter == 0)
1463                 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1464         else
1465                 ctx->reference = tmp_buf;
1466
1467         v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
1468
1469         ctx->gopcounter--;
1470         if (ctx->gopcounter < 0)
1471                 ctx->gopcounter = ctx->params.gop_size - 1;
1472
1473         v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1474                 "job finished: encoding frame (%d) (%s)\n",
1475                 dst_buf->v4l2_buf.sequence,
1476                 (dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
1477                 "KEYFRAME" : "PFRAME");
1478
1479         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx);
1480
1481         return IRQ_HANDLED;
1482 }
1483
1484 static u32 coda_supported_firmwares[] = {
1485         CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5),
1486 };
1487
1488 static bool coda_firmware_supported(u32 vernum)
1489 {
1490         int i;
1491
1492         for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++)
1493                 if (vernum == coda_supported_firmwares[i])
1494                         return true;
1495         return false;
1496 }
1497
1498 static char *coda_product_name(int product)
1499 {
1500         static char buf[9];
1501
1502         switch (product) {
1503         case CODA_DX6:
1504                 return "CodaDx6";
1505         default:
1506                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
1507                 return buf;
1508         }
1509 }
1510
1511 static int coda_hw_init(struct coda_dev *dev, const struct firmware *fw)
1512 {
1513         u16 product, major, minor, release;
1514         u32 data;
1515         u16 *p;
1516         int i;
1517
1518         clk_prepare_enable(dev->clk_per);
1519         clk_prepare_enable(dev->clk_ahb);
1520
1521         /* Copy the whole firmware image to the code buffer */
1522         memcpy(dev->codebuf.vaddr, fw->data, fw->size);
1523         /*
1524          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
1525          * This memory seems to be big-endian here, which is weird, since
1526          * the internal ARM processor of the coda is little endian.
1527          * Data in this SRAM survives a reboot.
1528          */
1529         p = (u16 *)fw->data;
1530         for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
1531                 data = CODA_DOWN_ADDRESS_SET(i) |
1532                         CODA_DOWN_DATA_SET(p[i ^ 1]);
1533                 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1534         }
1535         release_firmware(fw);
1536
1537         /* Tell the BIT where to find everything it needs */
1538         coda_write(dev, dev->workbuf.paddr,
1539                       CODA_REG_BIT_WORK_BUF_ADDR);
1540         coda_write(dev, dev->codebuf.paddr,
1541                       CODA_REG_BIT_CODE_BUF_ADDR);
1542         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
1543
1544         /* Set default values */
1545         switch (dev->devtype->product) {
1546         case CODA_DX6:
1547                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
1548                 break;
1549         default:
1550                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
1551         }
1552         coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
1553         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
1554                       CODA_REG_BIT_INT_ENABLE);
1555
1556         /* Reset VPU and start processor */
1557         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
1558         data |= CODA_REG_RESET_ENABLE;
1559         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1560         udelay(10);
1561         data &= ~CODA_REG_RESET_ENABLE;
1562         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1563         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
1564
1565         /* Load firmware */
1566         coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM);
1567         coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
1568         coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX);
1569         coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD);
1570         coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND);
1571         if (coda_wait_timeout(dev)) {
1572                 clk_disable_unprepare(dev->clk_per);
1573                 clk_disable_unprepare(dev->clk_ahb);
1574                 v4l2_err(&dev->v4l2_dev, "firmware get command error\n");
1575                 return -EIO;
1576         }
1577
1578         /* Check we are compatible with the loaded firmware */
1579         data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM);
1580         product = CODA_FIRMWARE_PRODUCT(data);
1581         major = CODA_FIRMWARE_MAJOR(data);
1582         minor = CODA_FIRMWARE_MINOR(data);
1583         release = CODA_FIRMWARE_RELEASE(data);
1584
1585         clk_disable_unprepare(dev->clk_per);
1586         clk_disable_unprepare(dev->clk_ahb);
1587
1588         if (product != dev->devtype->product) {
1589                 v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s,"
1590                          " Version: %u.%u.%u\n",
1591                          coda_product_name(dev->devtype->product),
1592                          coda_product_name(product), major, minor, release);
1593                 return -EINVAL;
1594         }
1595
1596         v4l2_info(&dev->v4l2_dev, "Initialized %s.\n",
1597                   coda_product_name(product));
1598
1599         if (coda_firmware_supported(data)) {
1600                 v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n",
1601                           major, minor, release);
1602         } else {
1603                 v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: "
1604                           "%u.%u.%u\n", major, minor, release);
1605         }
1606
1607         return 0;
1608 }
1609
1610 static void coda_fw_callback(const struct firmware *fw, void *context)
1611 {
1612         struct coda_dev *dev = context;
1613         struct platform_device *pdev = dev->plat_dev;
1614         int ret;
1615
1616         if (!fw) {
1617                 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
1618                 return;
1619         }
1620
1621         /* allocate auxiliary per-device code buffer for the BIT processor */
1622         dev->codebuf.size = fw->size;
1623         dev->codebuf.vaddr = dma_alloc_coherent(&pdev->dev, fw->size,
1624                                                     &dev->codebuf.paddr,
1625                                                     GFP_KERNEL);
1626         if (!dev->codebuf.vaddr) {
1627                 dev_err(&pdev->dev, "failed to allocate code buffer\n");
1628                 return;
1629         }
1630
1631         ret = coda_hw_init(dev, fw);
1632         if (ret) {
1633                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
1634                 return;
1635         }
1636
1637         dev->vfd.fops   = &coda_fops,
1638         dev->vfd.ioctl_ops      = &coda_ioctl_ops;
1639         dev->vfd.release        = video_device_release_empty,
1640         dev->vfd.lock   = &dev->dev_mutex;
1641         dev->vfd.v4l2_dev       = &dev->v4l2_dev;
1642         dev->vfd.vfl_dir        = VFL_DIR_M2M;
1643         snprintf(dev->vfd.name, sizeof(dev->vfd.name), "%s", CODA_NAME);
1644         video_set_drvdata(&dev->vfd, dev);
1645
1646         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1647         if (IS_ERR(dev->alloc_ctx)) {
1648                 v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
1649                 return;
1650         }
1651
1652         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
1653         if (IS_ERR(dev->m2m_dev)) {
1654                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1655                 goto rel_ctx;
1656         }
1657
1658         ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, 0);
1659         if (ret) {
1660                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1661                 goto rel_m2m;
1662         }
1663         v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video%d\n",
1664                   dev->vfd.num);
1665
1666         return;
1667
1668 rel_m2m:
1669         v4l2_m2m_release(dev->m2m_dev);
1670 rel_ctx:
1671         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
1672 }
1673
1674 static int coda_firmware_request(struct coda_dev *dev)
1675 {
1676         char *fw = dev->devtype->firmware;
1677
1678         dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
1679                 coda_product_name(dev->devtype->product));
1680
1681         return request_firmware_nowait(THIS_MODULE, true,
1682                 fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
1683 }
1684
1685 enum coda_platform {
1686         CODA_IMX27,
1687 };
1688
1689 static const struct coda_devtype coda_devdata[] = {
1690         [CODA_IMX27] = {
1691                 .firmware    = "v4l-codadx6-imx27.bin",
1692                 .product     = CODA_DX6,
1693                 .formats     = codadx6_formats,
1694                 .num_formats = ARRAY_SIZE(codadx6_formats),
1695         },
1696 };
1697
1698 static struct platform_device_id coda_platform_ids[] = {
1699         { .name = "coda-imx27", .driver_data = CODA_IMX27 },
1700         { /* sentinel */ }
1701 };
1702 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
1703
1704 #ifdef CONFIG_OF
1705 static const struct of_device_id coda_dt_ids[] = {
1706         { .compatible = "fsl,imx27-vpu", .data = &coda_platform_ids[CODA_IMX27] },
1707         { /* sentinel */ }
1708 };
1709 MODULE_DEVICE_TABLE(of, coda_dt_ids);
1710 #endif
1711
1712 static int __devinit coda_probe(struct platform_device *pdev)
1713 {
1714         const struct of_device_id *of_id =
1715                         of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
1716         const struct platform_device_id *pdev_id;
1717         struct coda_dev *dev;
1718         struct resource *res;
1719         int ret, irq;
1720
1721         dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
1722         if (!dev) {
1723                 dev_err(&pdev->dev, "Not enough memory for %s\n",
1724                         CODA_NAME);
1725                 return -ENOMEM;
1726         }
1727
1728         spin_lock_init(&dev->irqlock);
1729
1730         dev->plat_dev = pdev;
1731         dev->clk_per = devm_clk_get(&pdev->dev, "per");
1732         if (IS_ERR(dev->clk_per)) {
1733                 dev_err(&pdev->dev, "Could not get per clock\n");
1734                 return PTR_ERR(dev->clk_per);
1735         }
1736
1737         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
1738         if (IS_ERR(dev->clk_ahb)) {
1739                 dev_err(&pdev->dev, "Could not get ahb clock\n");
1740                 return PTR_ERR(dev->clk_ahb);
1741         }
1742
1743         /* Get  memory for physical registers */
1744         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1745         if (res == NULL) {
1746                 dev_err(&pdev->dev, "failed to get memory region resource\n");
1747                 return -ENOENT;
1748         }
1749
1750         if (devm_request_mem_region(&pdev->dev, res->start,
1751                         resource_size(res), CODA_NAME) == NULL) {
1752                 dev_err(&pdev->dev, "failed to request memory region\n");
1753                 return -ENOENT;
1754         }
1755         dev->regs_base = devm_ioremap(&pdev->dev, res->start,
1756                                       resource_size(res));
1757         if (!dev->regs_base) {
1758                 dev_err(&pdev->dev, "failed to ioremap address region\n");
1759                 return -ENOENT;
1760         }
1761
1762         /* IRQ */
1763         irq = platform_get_irq(pdev, 0);
1764         if (irq < 0) {
1765                 dev_err(&pdev->dev, "failed to get irq resource\n");
1766                 return -ENOENT;
1767         }
1768
1769         if (devm_request_irq(&pdev->dev, irq, coda_irq_handler,
1770                 0, CODA_NAME, dev) < 0) {
1771                 dev_err(&pdev->dev, "failed to request irq\n");
1772                 return -ENOENT;
1773         }
1774
1775         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1776         if (ret)
1777                 return ret;
1778
1779         mutex_init(&dev->dev_mutex);
1780
1781         pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
1782
1783         if (of_id) {
1784                 dev->devtype = of_id->data;
1785         } else if (pdev_id) {
1786                 dev->devtype = &coda_devdata[pdev_id->driver_data];
1787         } else {
1788                 v4l2_device_unregister(&dev->v4l2_dev);
1789                 return -EINVAL;
1790         }
1791
1792         /* allocate auxiliary per-device buffers for the BIT processor */
1793         switch (dev->devtype->product) {
1794         case CODA_DX6:
1795                 dev->workbuf.size = CODADX6_WORK_BUF_SIZE;
1796                 break;
1797         default:
1798                 dev->workbuf.size = CODA7_WORK_BUF_SIZE;
1799         }
1800         dev->workbuf.vaddr = dma_alloc_coherent(&pdev->dev, dev->workbuf.size,
1801                                                     &dev->workbuf.paddr,
1802                                                     GFP_KERNEL);
1803         if (!dev->workbuf.vaddr) {
1804                 dev_err(&pdev->dev, "failed to allocate work buffer\n");
1805                 v4l2_device_unregister(&dev->v4l2_dev);
1806                 return -ENOMEM;
1807         }
1808
1809         platform_set_drvdata(pdev, dev);
1810
1811         return coda_firmware_request(dev);
1812 }
1813
1814 static int coda_remove(struct platform_device *pdev)
1815 {
1816         struct coda_dev *dev = platform_get_drvdata(pdev);
1817
1818         video_unregister_device(&dev->vfd);
1819         if (dev->m2m_dev)
1820                 v4l2_m2m_release(dev->m2m_dev);
1821         if (dev->alloc_ctx)
1822                 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
1823         v4l2_device_unregister(&dev->v4l2_dev);
1824         if (dev->codebuf.vaddr)
1825                 dma_free_coherent(&pdev->dev, dev->codebuf.size,
1826                                   &dev->codebuf.vaddr, dev->codebuf.paddr);
1827         if (dev->workbuf.vaddr)
1828                 dma_free_coherent(&pdev->dev, dev->workbuf.size, &dev->workbuf.vaddr,
1829                           dev->workbuf.paddr);
1830         return 0;
1831 }
1832
1833 static struct platform_driver coda_driver = {
1834         .probe  = coda_probe,
1835         .remove = __devexit_p(coda_remove),
1836         .driver = {
1837                 .name   = CODA_NAME,
1838                 .owner  = THIS_MODULE,
1839                 .of_match_table = of_match_ptr(coda_dt_ids),
1840         },
1841         .id_table = coda_platform_ids,
1842 };
1843
1844 module_platform_driver(coda_driver);
1845
1846 MODULE_LICENSE("GPL");
1847 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
1848 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");