tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/of.h>
10#include <linux/regmap.h>
11
12#include "../decoder/mtk_vcodec_dec_drv.h"
13#include "../encoder/mtk_vcodec_enc_drv.h"
14#include "../decoder/mtk_vcodec_dec_hw.h"
15
16#if defined(CONFIG_DEBUG_FS)
17int mtk_vcodec_dbg;
18EXPORT_SYMBOL(mtk_vcodec_dbg);
19
20int mtk_v4l2_dbg_level;
21EXPORT_SYMBOL(mtk_v4l2_dbg_level);
22#endif
23
24void __iomem *mtk_vcodec_get_reg_addr(void __iomem **reg_base, unsigned int reg_idx)
25{
26 if (reg_idx >= NUM_MAX_VCODEC_REG_BASE) {
27 pr_err(MTK_DBG_V4L2_STR "Invalid arguments, reg_idx=%d", reg_idx);
28 return NULL;
29 }
30 return reg_base[reg_idx];
31}
32EXPORT_SYMBOL(mtk_vcodec_get_reg_addr);
33
34int mtk_vcodec_write_vdecsys(struct mtk_vcodec_dec_ctx *ctx, unsigned int reg,
35 unsigned int val)
36{
37 struct mtk_vcodec_dec_dev *dev = ctx->dev;
38
39 if (dev->vdecsys_regmap)
40 return regmap_write(dev->vdecsys_regmap, reg, val);
41
42 writel(val, dev->reg_base[VDEC_SYS] + reg);
43
44 return 0;
45}
46EXPORT_SYMBOL(mtk_vcodec_write_vdecsys);
47
48int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem)
49{
50 enum mtk_instance_type inst_type = *((unsigned int *)priv);
51 struct platform_device *plat_dev;
52 int id;
53
54 if (inst_type == MTK_INST_ENCODER) {
55 struct mtk_vcodec_enc_ctx *enc_ctx = priv;
56
57 plat_dev = enc_ctx->dev->plat_dev;
58 id = enc_ctx->id;
59 } else {
60 struct mtk_vcodec_dec_ctx *dec_ctx = priv;
61
62 plat_dev = dec_ctx->dev->plat_dev;
63 id = dec_ctx->id;
64 }
65
66 mem->va = dma_alloc_attrs(&plat_dev->dev, mem->size, &mem->dma_addr,
67 GFP_KERNEL, DMA_ATTR_ALLOC_SINGLE_PAGES);
68 if (!mem->va) {
69 mtk_v4l2_err(plat_dev, "%s dma_alloc size=0x%zx failed!",
70 __func__, mem->size);
71 return -ENOMEM;
72 }
73
74 mtk_v4l2_debug(plat_dev, 3, "[%d] - va = %p dma = 0x%lx size = 0x%zx", id, mem->va,
75 (unsigned long)mem->dma_addr, mem->size);
76
77 return 0;
78}
79EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
80
81void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem)
82{
83 enum mtk_instance_type inst_type = *((unsigned int *)priv);
84 struct platform_device *plat_dev;
85 int id;
86
87 if (inst_type == MTK_INST_ENCODER) {
88 struct mtk_vcodec_enc_ctx *enc_ctx = priv;
89
90 plat_dev = enc_ctx->dev->plat_dev;
91 id = enc_ctx->id;
92 } else {
93 struct mtk_vcodec_dec_ctx *dec_ctx = priv;
94
95 plat_dev = dec_ctx->dev->plat_dev;
96 id = dec_ctx->id;
97 }
98
99 if (!mem->va) {
100 mtk_v4l2_err(plat_dev, "%s: Tried to free a NULL VA", __func__);
101 if (mem->size)
102 mtk_v4l2_err(plat_dev, "Failed to free %zu bytes", mem->size);
103 return;
104 }
105
106 mtk_v4l2_debug(plat_dev, 3, "[%d] - va = %p dma = 0x%lx size = 0x%zx", id, mem->va,
107 (unsigned long)mem->dma_addr, mem->size);
108
109 dma_free_coherent(&plat_dev->dev, mem->size, mem->va, mem->dma_addr);
110 mem->va = NULL;
111 mem->dma_addr = 0;
112 mem->size = 0;
113}
114EXPORT_SYMBOL(mtk_vcodec_mem_free);
115
116void *mtk_vcodec_get_hw_dev(struct mtk_vcodec_dec_dev *dev, int hw_idx)
117{
118 if (hw_idx >= MTK_VDEC_HW_MAX || hw_idx < 0 || !dev->subdev_dev[hw_idx]) {
119 dev_err(&dev->plat_dev->dev, "hw idx is out of range:%d", hw_idx);
120 return NULL;
121 }
122
123 return dev->subdev_dev[hw_idx];
124}
125EXPORT_SYMBOL(mtk_vcodec_get_hw_dev);
126
127void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dec_dev *vdec_dev,
128 struct mtk_vcodec_dec_ctx *ctx, int hw_idx)
129{
130 unsigned long flags;
131 struct mtk_vdec_hw_dev *subdev_dev;
132
133 spin_lock_irqsave(&vdec_dev->irqlock, flags);
134 if (vdec_dev->vdec_pdata->is_subdev_supported) {
135 subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
136 if (!subdev_dev) {
137 dev_err(&vdec_dev->plat_dev->dev, "Failed to get hw dev");
138 spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
139 return;
140 }
141 subdev_dev->curr_ctx = ctx;
142 } else {
143 vdec_dev->curr_ctx = ctx;
144 }
145 spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
146}
147EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx);
148
149struct mtk_vcodec_dec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dec_dev *vdec_dev,
150 unsigned int hw_idx)
151{
152 unsigned long flags;
153 struct mtk_vcodec_dec_ctx *ctx;
154 struct mtk_vdec_hw_dev *subdev_dev;
155
156 spin_lock_irqsave(&vdec_dev->irqlock, flags);
157 if (vdec_dev->vdec_pdata->is_subdev_supported) {
158 subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
159 if (!subdev_dev) {
160 dev_err(&vdec_dev->plat_dev->dev, "Failed to get hw dev");
161 spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
162 return NULL;
163 }
164 ctx = subdev_dev->curr_ctx;
165 } else {
166 ctx = vdec_dev->curr_ctx;
167 }
168 spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
169 return ctx;
170}
171EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
172
173MODULE_LICENSE("GPL v2");
174MODULE_DESCRIPTION("Mediatek video codec driver");