1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2016 MediaTek Inc.
4 * Author: PC Chen <pc.chen@mediatek.com>
5 * Tiffany Lin <tiffany.lin@mediatek.com>
6 */
7
8 #include <linux/module.h>
9
10 #include "mtk_vcodec_drv.h"
11 #include "mtk_vcodec_util.h"
12 #include "mtk_vpu.h"
13
14 /* For encoder, this will enable logs in venc/*/
15 bool mtk_vcodec_dbg;
16 EXPORT_SYMBOL(mtk_vcodec_dbg);
17
18 /* The log level of v4l2 encoder or decoder driver.
19 * That is, files under mtk-vcodec/.
20 */
21 int mtk_v4l2_dbg_level;
22 EXPORT_SYMBOL(mtk_v4l2_dbg_level);
23
mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx * data,unsigned int reg_idx)24 void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx *data,
25 unsigned int reg_idx)
26 {
27 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
28
29 if (!data || reg_idx >= NUM_MAX_VCODEC_REG_BASE) {
30 mtk_v4l2_err("Invalid arguments, reg_idx=%d", reg_idx);
31 return NULL;
32 }
33 return ctx->dev->reg_base[reg_idx];
34 }
35 EXPORT_SYMBOL(mtk_vcodec_get_reg_addr);
36
mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx * data,struct mtk_vcodec_mem * mem)37 int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
38 struct mtk_vcodec_mem *mem)
39 {
40 unsigned long size = mem->size;
41 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
42 struct device *dev = &ctx->dev->plat_dev->dev;
43
44 mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
45 if (!mem->va) {
46 mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev),
47 size);
48 return -ENOMEM;
49 }
50
51 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
52 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
53 (unsigned long)mem->dma_addr);
54 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
55
56 return 0;
57 }
58 EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
59
mtk_vcodec_mem_free(struct mtk_vcodec_ctx * data,struct mtk_vcodec_mem * mem)60 void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
61 struct mtk_vcodec_mem *mem)
62 {
63 unsigned long size = mem->size;
64 struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
65 struct device *dev = &ctx->dev->plat_dev->dev;
66
67 if (!mem->va) {
68 mtk_v4l2_err("%s dma_free size=%ld failed!", dev_name(dev),
69 size);
70 return;
71 }
72
73 mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
74 mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
75 (unsigned long)mem->dma_addr);
76 mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
77
78 dma_free_coherent(dev, size, mem->va, mem->dma_addr);
79 mem->va = NULL;
80 mem->dma_addr = 0;
81 mem->size = 0;
82 }
83 EXPORT_SYMBOL(mtk_vcodec_mem_free);
84
mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev * dev,struct mtk_vcodec_ctx * ctx)85 void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
86 struct mtk_vcodec_ctx *ctx)
87 {
88 unsigned long flags;
89
90 spin_lock_irqsave(&dev->irqlock, flags);
91 dev->curr_ctx = ctx;
92 spin_unlock_irqrestore(&dev->irqlock, flags);
93 }
94 EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx);
95
mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev * dev)96 struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev)
97 {
98 unsigned long flags;
99 struct mtk_vcodec_ctx *ctx;
100
101 spin_lock_irqsave(&dev->irqlock, flags);
102 ctx = dev->curr_ctx;
103 spin_unlock_irqrestore(&dev->irqlock, flags);
104 return ctx;
105 }
106 EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
107
108 MODULE_LICENSE("GPL v2");
109 MODULE_DESCRIPTION("Mediatek video codec driver");
110