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
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Tiffany Lin <tiffany.lin@mediatek.com>
*/
#include <linux/clk.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <soc/mediatek/smi.h>
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vcodec_util.h"
#include "mtk_vpu.h"
int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
{
struct device_node *node;
struct platform_device *pdev;
struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *dec_clk;
struct mtk_vcodec_clk_info *clk_info;
int i = 0, ret = 0;
pdev = mtkdev->plat_dev;
pm = &mtkdev->pm;
pm->mtkdev = mtkdev;
dec_clk = &pm->vdec_clk;
node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
if (!node) {
mtk_v4l2_err("of_parse_phandle mediatek,larb fail!");
return -1;
}
pdev = of_find_device_by_node(node);
of_node_put(node);
if (WARN_ON(!pdev)) {
return -1;
}
pm->larbvdec = &pdev->dev;
pdev = mtkdev->plat_dev;
pm->dev = &pdev->dev;
dec_clk->clk_num =
of_property_count_strings(pdev->dev.of_node, "clock-names");
if (dec_clk->clk_num > 0) {
dec_clk->clk_info = devm_kcalloc(&pdev->dev,
dec_clk->clk_num, sizeof(*clk_info),
GFP_KERNEL);
if (!dec_clk->clk_info)
return -ENOMEM;
} else {
mtk_v4l2_err("Failed to get vdec clock count");
return -EINVAL;
}
for (i = 0; i < dec_clk->clk_num; i++) {
clk_info = &dec_clk->clk_info[i];
ret = of_property_read_string_index(pdev->dev.of_node,
"clock-names", i, &clk_info->clk_name);
if (ret) {
mtk_v4l2_err("Failed to get clock name id = %d", i);
return ret;
}
clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
clk_info->clk_name);
if (IS_ERR(clk_info->vcodec_clk)) {
mtk_v4l2_err("devm_clk_get (%d)%s fail", i,
clk_info->clk_name);
return PTR_ERR(clk_info->vcodec_clk);
}
}
pm_runtime_enable(&pdev->dev);
return ret;
}
void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
{
pm_runtime_disable(dev->pm.dev);
}
void mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
{
int ret;
ret = pm_runtime_get_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_get_sync fail %d", ret);
}
void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
{
int ret;
ret = pm_runtime_put_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
}
void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
{
struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
int ret, i = 0;
for (i = 0; i < dec_clk->clk_num; i++) {
ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk);
if (ret) {
mtk_v4l2_err("clk_prepare_enable %d %s fail %d", i,
dec_clk->clk_info[i].clk_name, ret);
goto error;
}
}
ret = mtk_smi_larb_get(pm->larbvdec);
if (ret) {
mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
goto error;
}
return;
error:
for (i -= 1; i >= 0; i--)
clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
}
void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
{
struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
int i = 0;
mtk_smi_larb_put(pm->larbvdec);
for (i = dec_clk->clk_num - 1; i >= 0; i--)
clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
}
|