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clk: Add get/enable/disable/release for a bulk of clocks
[u-boot] / drivers / clk / clk_sandbox_test.c
1 /*
2  * Copyright (c) 2016, NVIDIA CORPORATION.
3  *
4  * SPDX-License-Identifier: GPL-2.0
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <clk.h>
10 #include <asm/clk.h>
11
12 struct sandbox_clk_test {
13         struct clk clks[SANDBOX_CLK_TEST_ID_COUNT];
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
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
37 ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
38 {
39         struct sandbox_clk_test *sbct = dev_get_priv(dev);
40
41         if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
42                 return -EINVAL;
43
44         return clk_get_rate(&sbct->clks[id]);
45 }
46
47 ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
48 {
49         struct sandbox_clk_test *sbct = dev_get_priv(dev);
50
51         if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
52                 return -EINVAL;
53
54         return clk_set_rate(&sbct->clks[id], rate);
55 }
56
57 int sandbox_clk_test_enable(struct udevice *dev, int id)
58 {
59         struct sandbox_clk_test *sbct = dev_get_priv(dev);
60
61         if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
62                 return -EINVAL;
63
64         return clk_enable(&sbct->clks[id]);
65 }
66
67 int sandbox_clk_test_disable(struct udevice *dev, int id)
68 {
69         struct sandbox_clk_test *sbct = dev_get_priv(dev);
70
71         if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
72                 return -EINVAL;
73
74         return clk_disable(&sbct->clks[id]);
75 }
76
77 int sandbox_clk_test_free(struct udevice *dev)
78 {
79         struct sandbox_clk_test *sbct = dev_get_priv(dev);
80         int i, ret;
81
82         for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
83                 ret = clk_free(&sbct->clks[i]);
84                 if (ret)
85                         return ret;
86         }
87
88         return 0;
89 }
90
91 static const struct udevice_id sandbox_clk_test_ids[] = {
92         { .compatible = "sandbox,clk-test" },
93         { }
94 };
95
96 U_BOOT_DRIVER(sandbox_clk_test) = {
97         .name = "sandbox_clk_test",
98         .id = UCLASS_MISC,
99         .of_match = sandbox_clk_test_ids,
100         .priv_auto_alloc_size = sizeof(struct sandbox_clk_test),
101 };