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/*/
23 bool mtk_vcodec_dbg;
24 EXPORT_SYMBOL(mtk_vcodec_dbg);
25
26 /* The log level of v4l2 encoder or decoder driver.
27 * That is, files under mtk-vcodec/.
28 */
29 int mtk_v4l2_dbg_level;
30 EXPORT_SYMBOL(mtk_v4l2_dbg_level);
31
mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx * data,unsigned int reg_idx)32 void __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 }
43 EXPORT_SYMBOL(mtk_vcodec_get_reg_addr);
44
mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx * data,struct mtk_vcodec_mem * mem)45 int 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
54 if (!mem->va) {
55 mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev),
56 size);
57 return -ENOMEM;
58 }
59
60 memset(mem->va, 0, size);
61
62 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
63 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
64 (unsigned long)mem->dma_addr);
65 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
66
67 return 0;
68 }
69 EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
70
mtk_vcodec_mem_free(struct mtk_vcodec_ctx * data,struct mtk_vcodec_mem * mem)71 void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
72 struct mtk_vcodec_mem *mem)
73 {
74 unsigned long size = mem->size;
75 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
76 struct device *dev = &ctx->dev->plat_dev->dev;
77
78 if (!mem->va) {
79 mtk_v4l2_err("%s dma_free size=%ld failed!", dev_name(dev),
80 size);
81 return;
82 }
83
84 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
85 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
86 (unsigned long)mem->dma_addr);
87 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
88
89 dma_free_coherent(dev, size, mem->va, mem->dma_addr);
90 mem->va = NULL;
91 mem->dma_addr = 0;
92 mem->size = 0;
93 }
94 EXPORT_SYMBOL(mtk_vcodec_mem_free);
95
mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev * dev,struct mtk_vcodec_ctx * ctx)96 void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
97 struct mtk_vcodec_ctx *ctx)
98 {
99 unsigned long flags;
100
101 spin_lock_irqsave(&dev->irqlock, flags);
102 dev->curr_ctx = ctx;
103 spin_unlock_irqrestore(&dev->irqlock, flags);
104 }
105 EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx);
106
mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev * dev)107 struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev)
108 {
109 unsigned long flags;
110 struct mtk_vcodec_ctx *ctx;
111
112 spin_lock_irqsave(&dev->irqlock, flags);
113 ctx = dev->curr_ctx;
114 spin_unlock_irqrestore(&dev->irqlock, flags);
115 return ctx;
116 }
117 EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
118
119 MODULE_LICENSE("GPL v2");
120 MODULE_DESCRIPTION("Mediatek video codec driver");
121