drivers/media/platform/mtk-vcodec/vdec_drv_if.c

   1 /*
   2  * Copyright (c) 2016 MediaTek Inc.
   3  * Author: PC Chen <pc.chen@mediatek.com>
   4  *         Tiffany Lin <tiffany.lin@mediatek.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <linux/interrupt.h>
  17 #include <linux/kernel.h>
  18 #include <linux/slab.h>
  19
  20 #include "vdec_drv_if.h"
  21 #include "mtk_vcodec_dec.h"
  22 #include "vdec_drv_base.h"
  23 #include "mtk_vcodec_dec_pm.h"
  24 #include "mtk_vpu.h"
  25
  26 const struct vdec_common_if *get_h264_dec_comm_if(void);
  27 const struct vdec_common_if *get_vp8_dec_comm_if(void);
  28 const struct vdec_common_if *get_vp9_dec_comm_if(void);
  29
  30 int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
  31 {
  32         int ret = 0;
  33
  34         switch (fourcc) {
  35         case V4L2_PIX_FMT_H264:
  36                 ctx->dec_if = get_h264_dec_comm_if();
  37                 break;
  38         case V4L2_PIX_FMT_VP8:
  39                 ctx->dec_if = get_vp8_dec_comm_if();
  40                 break;
  41         case V4L2_PIX_FMT_VP9:
  42                 ctx->dec_if = get_vp9_dec_comm_if();
  43                 break;
  44         default:
  45                 return -EINVAL;
  46         }
  47
  48         mtk_vdec_lock(ctx);
  49         mtk_vcodec_dec_clock_on(&ctx->dev->pm);
  50         ret = ctx->dec_if->init(ctx, &ctx->drv_handle);
  51         mtk_vcodec_dec_clock_off(&ctx->dev->pm);
  52         mtk_vdec_unlock(ctx);
  53
  54         return ret;
  55 }
  56
  57 int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
  58                    struct vdec_fb *fb, bool *res_chg)
  59 {
  60         int ret = 0;
  61
  62         if (bs) {
  63                 if ((bs->dma_addr & 63) != 0) {
  64                         mtk_v4l2_err("bs dma_addr should 64 byte align");
  65                         return -EINVAL;
  66                 }
  67         }
  68
  69         if (fb) {
  70                 if (((fb->base_y.dma_addr & 511) != 0) ||
  71                     ((fb->base_c.dma_addr & 511) != 0)) {
  72                         mtk_v4l2_err("frame buffer dma_addr should 512 byte align");
  73                         return -EINVAL;
  74                 }
  75         }
  76
  77         if (ctx->drv_handle == 0)
  78                 return -EIO;
  79
  80         mtk_vdec_lock(ctx);
  81
  82         mtk_vcodec_set_curr_ctx(ctx->dev, ctx);
  83         mtk_vcodec_dec_clock_on(&ctx->dev->pm);
  84         enable_irq(ctx->dev->dec_irq);
  85         ret = ctx->dec_if->decode(ctx->drv_handle, bs, fb, res_chg);
  86         disable_irq(ctx->dev->dec_irq);
  87         mtk_vcodec_dec_clock_off(&ctx->dev->pm);
  88         mtk_vcodec_set_curr_ctx(ctx->dev, NULL);
  89
  90         mtk_vdec_unlock(ctx);
  91
  92         return ret;
  93 }
  94
  95 int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
  96                       void *out)
  97 {
  98         int ret = 0;
  99
 100         if (ctx->drv_handle == 0)
 101                 return -EIO;
 102
 103         mtk_vdec_lock(ctx);
 104         ret = ctx->dec_if->get_param(ctx->drv_handle, type, out);
 105         mtk_vdec_unlock(ctx);
 106
 107         return ret;
 108 }
 109
 110 void vdec_if_deinit(struct mtk_vcodec_ctx *ctx)
 111 {
 112         if (ctx->drv_handle == 0)
 113                 return;
 114
 115         mtk_vdec_lock(ctx);
 116         mtk_vcodec_dec_clock_on(&ctx->dev->pm);
 117         ctx->dec_if->deinit(ctx->drv_handle);
 118         mtk_vcodec_dec_clock_off(&ctx->dev->pm);
 119         mtk_vdec_unlock(ctx);
 120
 121         ctx->drv_handle = 0;
 122 }