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7#include <linux/clk.h>
8#include <linux/of_address.h>
9#include <linux/of_platform.h>
10#include <linux/pm_runtime.h>
11#include <soc/mediatek/smi.h>
12
13#include "mtk_vcodec_dec_pm.h"
14#include "mtk_vcodec_util.h"
15
16int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
17{
18 struct device_node *node;
19 struct platform_device *pdev;
20 struct mtk_vcodec_pm *pm;
21 struct mtk_vcodec_clk *dec_clk;
22 struct mtk_vcodec_clk_info *clk_info;
23 int i = 0, ret = 0;
24
25 pdev = mtkdev->plat_dev;
26 pm = &mtkdev->pm;
27 pm->mtkdev = mtkdev;
28 dec_clk = &pm->vdec_clk;
29 node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
30 if (!node) {
31 mtk_v4l2_err("of_parse_phandle mediatek,larb fail!");
32 return -1;
33 }
34
35 pdev = of_find_device_by_node(node);
36 of_node_put(node);
37 if (WARN_ON(!pdev)) {
38 return -1;
39 }
40 pm->larbvdec = &pdev->dev;
41 pdev = mtkdev->plat_dev;
42 pm->dev = &pdev->dev;
43
44 dec_clk->clk_num =
45 of_property_count_strings(pdev->dev.of_node, "clock-names");
46 if (dec_clk->clk_num > 0) {
47 dec_clk->clk_info = devm_kcalloc(&pdev->dev,
48 dec_clk->clk_num, sizeof(*clk_info),
49 GFP_KERNEL);
50 if (!dec_clk->clk_info) {
51 ret = -ENOMEM;
52 goto put_device;
53 }
54 } else {
55 mtk_v4l2_err("Failed to get vdec clock count");
56 ret = -EINVAL;
57 goto put_device;
58 }
59
60 for (i = 0; i < dec_clk->clk_num; i++) {
61 clk_info = &dec_clk->clk_info[i];
62 ret = of_property_read_string_index(pdev->dev.of_node,
63 "clock-names", i, &clk_info->clk_name);
64 if (ret) {
65 mtk_v4l2_err("Failed to get clock name id = %d", i);
66 goto put_device;
67 }
68 clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
69 clk_info->clk_name);
70 if (IS_ERR(clk_info->vcodec_clk)) {
71 mtk_v4l2_err("devm_clk_get (%d)%s fail", i,
72 clk_info->clk_name);
73 ret = PTR_ERR(clk_info->vcodec_clk);
74 goto put_device;
75 }
76 }
77
78 pm_runtime_enable(&pdev->dev);
79 return 0;
80put_device:
81 put_device(pm->larbvdec);
82 return ret;
83}
84
85void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
86{
87 pm_runtime_disable(dev->pm.dev);
88 put_device(dev->pm.larbvdec);
89}
90
91int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
92{
93 int ret;
94
95 ret = pm_runtime_resume_and_get(pm->dev);
96 if (ret)
97 mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret);
98
99 return ret;
100}
101
102void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
103{
104 int ret;
105
106 ret = pm_runtime_put_sync(pm->dev);
107 if (ret)
108 mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
109}
110
111void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
112{
113 struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
114 int ret, i = 0;
115
116 for (i = 0; i < dec_clk->clk_num; i++) {
117 ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk);
118 if (ret) {
119 mtk_v4l2_err("clk_prepare_enable %d %s fail %d", i,
120 dec_clk->clk_info[i].clk_name, ret);
121 goto error;
122 }
123 }
124
125 ret = mtk_smi_larb_get(pm->larbvdec);
126 if (ret) {
127 mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
128 goto error;
129 }
130 return;
131
132error:
133 for (i -= 1; i >= 0; i--)
134 clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
135}
136
137void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
138{
139 struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
140 int i = 0;
141
142 mtk_smi_larb_put(pm->larbvdec);
143 for (i = dec_clk->clk_num - 1; i >= 0; i--)
144 clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
145}
146
