1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2021 MediaTek Inc.
* Author: Yunfei Dong <yunfei.dong@mediatek.com>
*/
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "mtk_vcodec_dec.h"
#include "mtk_vcodec_dec_hw.h"
#include "mtk_vcodec_dec_pm.h"
#include "../common/mtk_vcodec_intr.h"
static const struct of_device_id mtk_vdec_hw_match[] = {
{
.compatible = "mediatek,mtk-vcodec-lat",
.data = (void *)MTK_VDEC_LAT0,
},
{
.compatible = "mediatek,mtk-vcodec-core",
.data = (void *)MTK_VDEC_CORE,
},
{
.compatible = "mediatek,mtk-vcodec-lat-soc",
.data = (void *)MTK_VDEC_LAT_SOC,
},
{},
};
MODULE_DEVICE_TABLE(of, mtk_vdec_hw_match);
static int mtk_vdec_hw_prob_done(struct mtk_vcodec_dec_dev *vdec_dev)
{
struct platform_device *pdev = vdec_dev->plat_dev;
struct device_node *subdev_node;
enum mtk_vdec_hw_id hw_idx;
const struct of_device_id *of_id;
int i;
for (i = 0; i < ARRAY_SIZE(mtk_vdec_hw_match); i++) {
of_id = &mtk_vdec_hw_match[i];
subdev_node = of_find_compatible_node(NULL, NULL,
of_id->compatible);
if (!subdev_node)
continue;
of_node_put(subdev_node);
hw_idx = (enum mtk_vdec_hw_id)(uintptr_t)of_id->data;
if (!test_bit(hw_idx, vdec_dev->subdev_bitmap)) {
dev_err(&pdev->dev, "vdec %d is not ready", hw_idx);
return -EAGAIN;
}
}
return 0;
}
static irqreturn_t mtk_vdec_hw_irq_handler(int irq, void *priv)
{
struct mtk_vdec_hw_dev *dev = priv;
struct mtk_vcodec_dec_ctx *ctx;
u32 cg_status;
unsigned int dec_done_status;
void __iomem *vdec_misc_addr = dev->reg_base[VDEC_HW_MISC] +
VDEC_IRQ_CFG_REG;
ctx = mtk_vcodec_get_curr_ctx(dev->main_dev, dev->hw_idx);
/* check if HW active or not */
cg_status = readl(dev->reg_base[VDEC_HW_SYS] + VDEC_HW_ACTIVE_ADDR);
if (cg_status & VDEC_HW_ACTIVE_MASK) {
mtk_v4l2_vdec_err(ctx, "vdec active is not 0x0 (0x%08x)", cg_status);
return IRQ_HANDLED;
}
dec_done_status = readl(vdec_misc_addr);
if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
return IRQ_HANDLED;
/* clear interrupt */
writel(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr);
writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr);
wake_up_dec_ctx(ctx, MTK_INST_IRQ_RECEIVED, dev->hw_idx);
mtk_v4l2_vdec_dbg(3, ctx, "wake up ctx %d, dec_done_status=%x",
ctx->id, dec_done_status);
return IRQ_HANDLED;
}
static int mtk_vdec_hw_init_irq(struct mtk_vdec_hw_dev *dev)
{
struct platform_device *pdev = dev->plat_dev;
int ret;
dev->dec_irq = platform_get_irq(pdev, 0);
if (dev->dec_irq < 0)
return dev->dec_irq;
irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
ret = devm_request_irq(&pdev->dev, dev->dec_irq,
mtk_vdec_hw_irq_handler, 0, pdev->name, dev);
if (ret) {
dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
dev->dec_irq, ret);
return ret;
}
return 0;
}
static int mtk_vdec_hw_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mtk_vdec_hw_dev *subdev_dev;
struct mtk_vcodec_dec_dev *main_dev;
const struct of_device_id *of_id;
int hw_idx;
int ret;
if (!dev->parent) {
dev_err(dev, "no parent for hardware devices.\n");
return -ENODEV;
}
main_dev = dev_get_drvdata(dev->parent);
if (!main_dev) {
dev_err(dev, "failed to get parent driver data");
return -EINVAL;
}
subdev_dev = devm_kzalloc(dev, sizeof(*subdev_dev), GFP_KERNEL);
if (!subdev_dev)
return -ENOMEM;
subdev_dev->plat_dev = pdev;
ret = mtk_vcodec_init_dec_clk(pdev, &subdev_dev->pm);
if (ret)
return ret;
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
of_id = of_match_device(mtk_vdec_hw_match, dev);
if (!of_id) {
dev_err(dev, "Can't get vdec subdev id.\n");
return -EINVAL;
}
hw_idx = (enum mtk_vdec_hw_id)(uintptr_t)of_id->data;
if (hw_idx >= MTK_VDEC_HW_MAX) {
dev_err(dev, "Hardware index %d not correct.\n", hw_idx);
return -EINVAL;
}
main_dev->subdev_dev[hw_idx] = subdev_dev;
subdev_dev->hw_idx = hw_idx;
subdev_dev->main_dev = main_dev;
subdev_dev->reg_base[VDEC_HW_SYS] = main_dev->reg_base[VDEC_HW_SYS];
set_bit(subdev_dev->hw_idx, main_dev->subdev_bitmap);
if (IS_SUPPORT_VDEC_HW_IRQ(hw_idx)) {
ret = mtk_vdec_hw_init_irq(subdev_dev);
if (ret)
return ret;
}
subdev_dev->reg_base[VDEC_HW_MISC] =
devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR((__force void *)subdev_dev->reg_base[VDEC_HW_MISC])) {
ret = PTR_ERR((__force void *)subdev_dev->reg_base[VDEC_HW_MISC]);
return ret;
}
if (!main_dev->subdev_prob_done)
main_dev->subdev_prob_done = mtk_vdec_hw_prob_done;
platform_set_drvdata(pdev, subdev_dev);
return 0;
}
static struct platform_driver mtk_vdec_driver = {
.probe = mtk_vdec_hw_probe,
.driver = {
.name = "mtk-vdec-comp",
.of_match_table = mtk_vdec_hw_match,
},
};
module_platform_driver(mtk_vdec_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Mediatek video decoder hardware driver");
|
