1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2016, NVIDIA CORPORATION.
4 */
5
6 #include <dm.h>
7 #include <log.h>
8 #include <malloc.h>
9 #include <reset.h>
10 #include <asm/io.h>
11 #include <asm/reset.h>
12 #include <linux/err.h>
13
14 struct sandbox_reset_test {
15 struct reset_ctl ctl;
16 struct reset_ctl_bulk bulk;
17
18 struct reset_ctl *ctlp;
19 struct reset_ctl_bulk *bulkp;
20 };
21
sandbox_reset_test_get(struct udevice * dev)22 int sandbox_reset_test_get(struct udevice *dev)
23 {
24 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
25
26 sbrt->ctlp = &sbrt->ctl;
27 return reset_get_by_name(dev, "test", &sbrt->ctl);
28 }
29
sandbox_reset_test_get_devm(struct udevice * dev)30 int sandbox_reset_test_get_devm(struct udevice *dev)
31 {
32 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
33 struct reset_ctl *r;
34
35 r = devm_reset_control_get(dev, "not-a-valid-reset-ctl");
36 if (!IS_ERR(r))
37 return -EINVAL;
38
39 r = devm_reset_control_get_optional(dev, "not-a-valid-reset-ctl");
40 if (r)
41 return -EINVAL;
42
43 sbrt->ctlp = devm_reset_control_get(dev, "test");
44 if (IS_ERR(sbrt->ctlp))
45 return PTR_ERR(sbrt->ctlp);
46
47 return 0;
48 }
49
sandbox_reset_test_get_bulk(struct udevice * dev)50 int sandbox_reset_test_get_bulk(struct udevice *dev)
51 {
52 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
53
54 sbrt->bulkp = &sbrt->bulk;
55 return reset_get_bulk(dev, &sbrt->bulk);
56 }
57
sandbox_reset_test_get_bulk_devm(struct udevice * dev)58 int sandbox_reset_test_get_bulk_devm(struct udevice *dev)
59 {
60 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
61 struct reset_ctl_bulk *r;
62
63 r = devm_reset_bulk_get_optional(dev);
64 if (IS_ERR(r))
65 return PTR_ERR(r);
66
67 sbrt->bulkp = r;
68 return 0;
69 }
70
sandbox_reset_test_assert(struct udevice * dev)71 int sandbox_reset_test_assert(struct udevice *dev)
72 {
73 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
74
75 return reset_assert(sbrt->ctlp);
76 }
77
sandbox_reset_test_assert_bulk(struct udevice * dev)78 int sandbox_reset_test_assert_bulk(struct udevice *dev)
79 {
80 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
81
82 return reset_assert_bulk(sbrt->bulkp);
83 }
84
sandbox_reset_test_deassert(struct udevice * dev)85 int sandbox_reset_test_deassert(struct udevice *dev)
86 {
87 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
88
89 return reset_deassert(sbrt->ctlp);
90 }
91
sandbox_reset_test_deassert_bulk(struct udevice * dev)92 int sandbox_reset_test_deassert_bulk(struct udevice *dev)
93 {
94 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
95
96 return reset_deassert_bulk(sbrt->bulkp);
97 }
98
sandbox_reset_test_free(struct udevice * dev)99 int sandbox_reset_test_free(struct udevice *dev)
100 {
101 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
102
103 return reset_free(sbrt->ctlp);
104 }
105
sandbox_reset_test_release_bulk(struct udevice * dev)106 int sandbox_reset_test_release_bulk(struct udevice *dev)
107 {
108 struct sandbox_reset_test *sbrt = dev_get_priv(dev);
109
110 return reset_release_bulk(sbrt->bulkp);
111 }
112
113 static const struct udevice_id sandbox_reset_test_ids[] = {
114 { .compatible = "sandbox,reset-ctl-test" },
115 { }
116 };
117
118 U_BOOT_DRIVER(sandbox_reset_test) = {
119 .name = "sandbox_reset_test",
120 .id = UCLASS_MISC,
121 .of_match = sandbox_reset_test_ids,
122 .priv_auto = sizeof(struct sandbox_reset_test),
123 };
124