1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2016, NVIDIA CORPORATION.
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <clk.h>
9 #include <asm/clk.h>
10
11 struct sandbox_clk_test {
12 struct clk clks[SANDBOX_CLK_TEST_ID_COUNT];
13 struct clk_bulk bulk;
14 };
15
16 static const char * const sandbox_clk_test_names[] = {
17 [SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
18 [SANDBOX_CLK_TEST_ID_SPI] = "spi",
19 [SANDBOX_CLK_TEST_ID_I2C] = "i2c",
20 };
21
sandbox_clk_test_get(struct udevice * dev)22 int sandbox_clk_test_get(struct udevice *dev)
23 {
24 struct sandbox_clk_test *sbct = dev_get_priv(dev);
25 int i, ret;
26
27 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
28 ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
29 &sbct->clks[i]);
30 if (ret)
31 return ret;
32 }
33
34 return 0;
35 }
36
sandbox_clk_test_get_bulk(struct udevice * dev)37 int sandbox_clk_test_get_bulk(struct udevice *dev)
38 {
39 struct sandbox_clk_test *sbct = dev_get_priv(dev);
40
41 return clk_get_bulk(dev, &sbct->bulk);
42 }
43
sandbox_clk_test_get_rate(struct udevice * dev,int id)44 ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
45 {
46 struct sandbox_clk_test *sbct = dev_get_priv(dev);
47
48 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
49 return -EINVAL;
50
51 return clk_get_rate(&sbct->clks[id]);
52 }
53
sandbox_clk_test_set_rate(struct udevice * dev,int id,ulong rate)54 ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
55 {
56 struct sandbox_clk_test *sbct = dev_get_priv(dev);
57
58 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
59 return -EINVAL;
60
61 return clk_set_rate(&sbct->clks[id], rate);
62 }
63
sandbox_clk_test_enable(struct udevice * dev,int id)64 int sandbox_clk_test_enable(struct udevice *dev, int id)
65 {
66 struct sandbox_clk_test *sbct = dev_get_priv(dev);
67
68 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
69 return -EINVAL;
70
71 return clk_enable(&sbct->clks[id]);
72 }
73
sandbox_clk_test_enable_bulk(struct udevice * dev)74 int sandbox_clk_test_enable_bulk(struct udevice *dev)
75 {
76 struct sandbox_clk_test *sbct = dev_get_priv(dev);
77
78 return clk_enable_bulk(&sbct->bulk);
79 }
80
sandbox_clk_test_disable(struct udevice * dev,int id)81 int sandbox_clk_test_disable(struct udevice *dev, int id)
82 {
83 struct sandbox_clk_test *sbct = dev_get_priv(dev);
84
85 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
86 return -EINVAL;
87
88 return clk_disable(&sbct->clks[id]);
89 }
90
sandbox_clk_test_disable_bulk(struct udevice * dev)91 int sandbox_clk_test_disable_bulk(struct udevice *dev)
92 {
93 struct sandbox_clk_test *sbct = dev_get_priv(dev);
94
95 return clk_disable_bulk(&sbct->bulk);
96 }
97
sandbox_clk_test_free(struct udevice * dev)98 int sandbox_clk_test_free(struct udevice *dev)
99 {
100 struct sandbox_clk_test *sbct = dev_get_priv(dev);
101 int i, ret;
102
103 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
104 ret = clk_free(&sbct->clks[i]);
105 if (ret)
106 return ret;
107 }
108
109 return 0;
110 }
111
sandbox_clk_test_release_bulk(struct udevice * dev)112 int sandbox_clk_test_release_bulk(struct udevice *dev)
113 {
114 struct sandbox_clk_test *sbct = dev_get_priv(dev);
115
116 return clk_release_bulk(&sbct->bulk);
117 }
118
sandbox_clk_test_valid(struct udevice * dev)119 int sandbox_clk_test_valid(struct udevice *dev)
120 {
121 struct sandbox_clk_test *sbct = dev_get_priv(dev);
122 int i;
123
124 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
125 if (!clk_valid(&sbct->clks[i]))
126 return -EINVAL;
127 }
128
129 return 0;
130 }
131
132 static const struct udevice_id sandbox_clk_test_ids[] = {
133 { .compatible = "sandbox,clk-test" },
134 { }
135 };
136
137 U_BOOT_DRIVER(sandbox_clk_test) = {
138 .name = "sandbox_clk_test",
139 .id = UCLASS_MISC,
140 .of_match = sandbox_clk_test_ids,
141 .priv_auto_alloc_size = sizeof(struct sandbox_clk_test),
142 };
143