drivers/staging/media/sunxi/cedrus/cedrus_dec.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Cedrus VPU driver
   4  *
   5  * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
   6  * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
   7  * Copyright (C) 2018 Bootlin
   8  *
   9  * Based on the vim2m driver, that is:
  10  *
  11  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
  12  * Pawel Osciak, <pawel@osciak.com>
  13  * Marek Szyprowski, <m.szyprowski@samsung.com>
  14  */
  15
  16 #include <media/v4l2-device.h>
  17 #include <media/v4l2-ioctl.h>
  18 #include <media/v4l2-event.h>
  19 #include <media/v4l2-mem2mem.h>
  20
  21 #include "cedrus.h"
  22 #include "cedrus_dec.h"
  23 #include "cedrus_hw.h"
  24
  25 void cedrus_device_run(void *priv)
  26 {
  27         struct cedrus_ctx *ctx = priv;
  28         struct cedrus_dev *dev = ctx->dev;
  29         struct cedrus_run run = { 0 };
  30         struct media_request *src_req;
  31         unsigned long flags;
  32
  33         run.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
  34         run.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
  35
  36         /* Apply request(s) controls if needed. */
  37         src_req = run.src->vb2_buf.req_obj.req;
  38
  39         if (src_req)
  40                 v4l2_ctrl_request_setup(src_req, &ctx->hdl);
  41
  42         spin_lock_irqsave(&ctx->dev->irq_lock, flags);
  43
  44         switch (ctx->src_fmt.pixelformat) {
  45         case V4L2_PIX_FMT_MPEG2_SLICE:
  46                 run.mpeg2.slice_params = cedrus_find_control_data(ctx,
  47                         V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS);
  48                 run.mpeg2.quantization = cedrus_find_control_data(ctx,
  49                         V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION);
  50                 break;
  51
  52         default:
  53                 break;
  54         }
  55
  56         dev->dec_ops[ctx->current_codec]->setup(ctx, &run);
  57
  58         spin_unlock_irqrestore(&ctx->dev->irq_lock, flags);
  59
  60         /* Complete request(s) controls if needed. */
  61
  62         if (src_req)
  63                 v4l2_ctrl_request_complete(src_req, &ctx->hdl);
  64
  65         spin_lock_irqsave(&ctx->dev->irq_lock, flags);
  66
  67         dev->dec_ops[ctx->current_codec]->trigger(ctx);
  68
  69         spin_unlock_irqrestore(&ctx->dev->irq_lock, flags);
  70 }