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/module.h>
17
18#include "mtk_vcodec_drv.h"
19#include "mtk_vcodec_util.h"
20#include "mtk_vpu.h"
21
22/* For encoder, this will enable logs in venc/*/
23bool mtk_vcodec_dbg;
24EXPORT_SYMBOL(mtk_vcodec_dbg);
25
26/* The log level of v4l2 encoder or decoder driver.
27 * That is, files under mtk-vcodec/.
28 */
29int mtk_v4l2_dbg_level;
30EXPORT_SYMBOL(mtk_v4l2_dbg_level);
31
32void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx *data,
33 unsigned int reg_idx)
34{
35 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
36
37 if (!data || reg_idx >= NUM_MAX_VCODEC_REG_BASE) {
38 mtk_v4l2_err("Invalid arguments, reg_idx=%d", reg_idx);
39 return NULL;
40 }
41 return ctx->dev->reg_base[reg_idx];
42}
43EXPORT_SYMBOL(mtk_vcodec_get_reg_addr);
44
45int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
46 struct mtk_vcodec_mem *mem)
47{
48 unsigned long size = mem->size;
49 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
50 struct device *dev = &ctx->dev->plat_dev->dev;
51
52 mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
53 if (!mem->va) {
54 mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev),
55 size);
56 return -ENOMEM;
57 }
58
59 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
60 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
61 (unsigned long)mem->dma_addr);
62 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
63
64 return 0;
65}
66EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
67
68void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
69 struct mtk_vcodec_mem *mem)
70{
71 unsigned long size = mem->size;
72 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
73 struct device *dev = &ctx->dev->plat_dev->dev;
74
75 if (!mem->va) {
76 mtk_v4l2_err("%s dma_free size=%ld failed!", dev_name(dev),
77 size);
78 return;
79 }
80
81 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
82 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
83 (unsigned long)mem->dma_addr);
84 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
85
86 dma_free_coherent(dev, size, mem->va, mem->dma_addr);
87 mem->va = NULL;
88 mem->dma_addr = 0;
89 mem->size = 0;
90}
91EXPORT_SYMBOL(mtk_vcodec_mem_free);
92
93void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
94 struct mtk_vcodec_ctx *ctx)
95{
96 unsigned long flags;
97
98 spin_lock_irqsave(&dev->irqlock, flags);
99 dev->curr_ctx = ctx;
100 spin_unlock_irqrestore(&dev->irqlock, flags);
101}
102EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx);
103
104struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev)
105{
106 unsigned long flags;
107 struct mtk_vcodec_ctx *ctx;
108
109 spin_lock_irqsave(&dev->irqlock, flags);
110 ctx = dev->curr_ctx;
111 spin_unlock_irqrestore(&dev->irqlock, flags);
112 return ctx;
113}
114EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
115
116MODULE_LICENSE("GPL v2");
117MODULE_DESCRIPTION("Mediatek video codec driver");