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6#include <common.h>
7#include <dm.h>
8#include <clk.h>
9#include <malloc.h>
10#include <asm/clk.h>
11#include <dm/device_compat.h>
12#include <linux/err.h>
13
14static const char * const sandbox_clk_test_names[] = {
15 [SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
16 [SANDBOX_CLK_TEST_ID_SPI] = "spi",
17 [SANDBOX_CLK_TEST_ID_I2C] = "i2c",
18};
19
20int sandbox_clk_test_get(struct udevice *dev)
21{
22 struct sandbox_clk_test *sbct = dev_get_priv(dev);
23 int i, ret;
24
25 for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
26 ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
27 &sbct->clks[i]);
28 if (ret)
29 return ret;
30 }
31
32 return 0;
33}
34
35int sandbox_clk_test_devm_get(struct udevice *dev)
36{
37 struct sandbox_clk_test *sbct = dev_get_priv(dev);
38 struct clk *clk;
39
40 clk = devm_clk_get(dev, "no-an-existing-clock");
41 if (!IS_ERR(clk)) {
42 dev_err(dev, "devm_clk_get() should have failed\n");
43 return -EINVAL;
44 }
45
46 clk = devm_clk_get(dev, "uart2");
47 if (IS_ERR(clk))
48 return PTR_ERR(clk);
49 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;
50
51 clk = devm_clk_get_optional(dev, "uart1");
52 if (IS_ERR(clk))
53 return PTR_ERR(clk);
54 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;
55
56 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
57 clk = devm_clk_get_optional(dev, "not_an_existing_clock");
58 if (IS_ERR(clk))
59 return PTR_ERR(clk);
60 if (clk)
61 return -EINVAL;
62
63 return 0;
64}
65
66int sandbox_clk_test_get_bulk(struct udevice *dev)
67{
68 struct sandbox_clk_test *sbct = dev_get_priv(dev);
69
70 return clk_get_bulk(dev, &sbct->bulk);
71}
72
73ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
74{
75 struct sandbox_clk_test *sbct = dev_get_priv(dev);
76
77 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
78 return -EINVAL;
79
80 return clk_get_rate(sbct->clkps[id]);
81}
82
83ulong sandbox_clk_test_round_rate(struct udevice *dev, int id, ulong rate)
84{
85 struct sandbox_clk_test *sbct = dev_get_priv(dev);
86
87 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
88 return -EINVAL;
89
90 return clk_round_rate(sbct->clkps[id], rate);
91}
92
93ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
94{
95 struct sandbox_clk_test *sbct = dev_get_priv(dev);
96
97 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
98 return -EINVAL;
99
100 return clk_set_rate(sbct->clkps[id], rate);
101}
102
103int sandbox_clk_test_enable(struct udevice *dev, int id)
104{
105 struct sandbox_clk_test *sbct = dev_get_priv(dev);
106
107 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
108 return -EINVAL;
109
110 return clk_enable(sbct->clkps[id]);
111}
112
113int sandbox_clk_test_enable_bulk(struct udevice *dev)
114{
115 struct sandbox_clk_test *sbct = dev_get_priv(dev);
116
117 return clk_enable_bulk(&sbct->bulk);
118}
119
120int sandbox_clk_test_disable(struct udevice *dev, int id)
121{
122 struct sandbox_clk_test *sbct = dev_get_priv(dev);
123
124 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
125 return -EINVAL;
126
127 return clk_disable(sbct->clkps[id]);
128}
129
130int sandbox_clk_test_disable_bulk(struct udevice *dev)
131{
132 struct sandbox_clk_test *sbct = dev_get_priv(dev);
133
134 return clk_disable_bulk(&sbct->bulk);
135}
136
137int sandbox_clk_test_free(struct udevice *dev)
138{
139 struct sandbox_clk_test *sbct = dev_get_priv(dev);
140 int i, ret;
141
142 devm_clk_put(dev, sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1]);
143 for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
144 ret = clk_free(&sbct->clks[i]);
145 if (ret)
146 return ret;
147 }
148
149 return 0;
150}
151
152int sandbox_clk_test_release_bulk(struct udevice *dev)
153{
154 struct sandbox_clk_test *sbct = dev_get_priv(dev);
155
156 return clk_release_bulk(&sbct->bulk);
157}
158
159int sandbox_clk_test_valid(struct udevice *dev)
160{
161 struct sandbox_clk_test *sbct = dev_get_priv(dev);
162 int i;
163
164 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
165 if (!clk_valid(sbct->clkps[i]))
166 if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
167 return -EINVAL;
168 }
169
170 return 0;
171}
172
173static int sandbox_clk_test_probe(struct udevice *dev)
174{
175 struct sandbox_clk_test *sbct = dev_get_priv(dev);
176 int i;
177
178 for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
179 sbct->clkps[i] = &sbct->clks[i];
180 for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
181 sbct->clkps[i] = NULL;
182
183 return 0;
184}
185
186static const struct udevice_id sandbox_clk_test_ids[] = {
187 { .compatible = "sandbox,clk-test" },
188 { }
189};
190
191U_BOOT_DRIVER(sandbox_clk_test) = {
192 .name = "sandbox_clk_test",
193 .id = UCLASS_MISC,
194 .of_match = sandbox_clk_test_ids,
195 .probe = sandbox_clk_test_probe,
196 .priv_auto = sizeof(struct sandbox_clk_test),
197};
198
