tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
26const struct vdec_common_if *get_h264_dec_comm_if(void);
27const struct vdec_common_if *get_vp8_dec_comm_if(void);
28const struct vdec_common_if *get_vp9_dec_comm_if(void);
29
30int 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
57int 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
95int 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
110void 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}