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135aa950 SW |
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 | }; |