1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016, NVIDIA CORPORATION.
11 struct sandbox_clk_test {
12 struct clk clks[SANDBOX_CLK_TEST_NON_DEVM_COUNT];
13 struct clk *clkps[SANDBOX_CLK_TEST_ID_COUNT];
17 static const char * const sandbox_clk_test_names[] = {
18 [SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
19 [SANDBOX_CLK_TEST_ID_SPI] = "spi",
20 [SANDBOX_CLK_TEST_ID_I2C] = "i2c",
23 int sandbox_clk_test_get(struct udevice *dev)
25 struct sandbox_clk_test *sbct = dev_get_priv(dev);
28 for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
29 ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
38 int sandbox_clk_test_devm_get(struct udevice *dev)
40 struct sandbox_clk_test *sbct = dev_get_priv(dev);
43 clk = devm_clk_get(dev, "no-an-existing-clock");
45 dev_err(dev, "devm_clk_get() should have failed\n");
49 clk = devm_clk_get(dev, "uart2");
52 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;
54 clk = devm_clk_get_optional(dev, "uart1");
57 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;
59 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
60 clk = devm_clk_get_optional(dev, "not_an_existing_clock");
69 int sandbox_clk_test_get_bulk(struct udevice *dev)
71 struct sandbox_clk_test *sbct = dev_get_priv(dev);
73 return clk_get_bulk(dev, &sbct->bulk);
76 ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
78 struct sandbox_clk_test *sbct = dev_get_priv(dev);
80 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
83 return clk_get_rate(sbct->clkps[id]);
86 ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
88 struct sandbox_clk_test *sbct = dev_get_priv(dev);
90 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
93 return clk_set_rate(sbct->clkps[id], rate);
96 int sandbox_clk_test_enable(struct udevice *dev, int id)
98 struct sandbox_clk_test *sbct = dev_get_priv(dev);
100 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
103 return clk_enable(sbct->clkps[id]);
106 int sandbox_clk_test_enable_bulk(struct udevice *dev)
108 struct sandbox_clk_test *sbct = dev_get_priv(dev);
110 return clk_enable_bulk(&sbct->bulk);
113 int sandbox_clk_test_disable(struct udevice *dev, int id)
115 struct sandbox_clk_test *sbct = dev_get_priv(dev);
117 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
120 return clk_disable(sbct->clkps[id]);
123 int sandbox_clk_test_disable_bulk(struct udevice *dev)
125 struct sandbox_clk_test *sbct = dev_get_priv(dev);
127 return clk_disable_bulk(&sbct->bulk);
130 int sandbox_clk_test_free(struct udevice *dev)
132 struct sandbox_clk_test *sbct = dev_get_priv(dev);
135 devm_clk_put(dev, sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1]);
136 for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
137 ret = clk_free(&sbct->clks[i]);
145 int sandbox_clk_test_release_bulk(struct udevice *dev)
147 struct sandbox_clk_test *sbct = dev_get_priv(dev);
149 return clk_release_bulk(&sbct->bulk);
152 int sandbox_clk_test_valid(struct udevice *dev)
154 struct sandbox_clk_test *sbct = dev_get_priv(dev);
157 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
158 if (!clk_valid(sbct->clkps[i]))
159 if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
166 static int sandbox_clk_test_probe(struct udevice *dev)
168 struct sandbox_clk_test *sbct = dev_get_priv(dev);
171 for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
172 sbct->clkps[i] = &sbct->clks[i];
173 for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
174 sbct->clkps[i] = NULL;
179 static const struct udevice_id sandbox_clk_test_ids[] = {
180 { .compatible = "sandbox,clk-test" },
184 U_BOOT_DRIVER(sandbox_clk_test) = {
185 .name = "sandbox_clk_test",
187 .of_match = sandbox_clk_test_ids,
188 .probe = sandbox_clk_test_probe,
189 .priv_auto_alloc_size = sizeof(struct sandbox_clk_test),