1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016, NVIDIA CORPORATION.
11 #include <dm/device_compat.h>
12 #include <linux/err.h>
14 static 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",
20 int sandbox_clk_test_get(struct udevice *dev)
22 struct sandbox_clk_test *sbct = dev_get_priv(dev);
25 for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
26 ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
35 int sandbox_clk_test_devm_get(struct udevice *dev)
37 struct sandbox_clk_test *sbct = dev_get_priv(dev);
40 clk = devm_clk_get(dev, "no-an-existing-clock");
42 dev_err(dev, "devm_clk_get() should have failed\n");
46 clk = devm_clk_get(dev, "uart2");
49 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;
51 clk = devm_clk_get_optional(dev, "uart1");
54 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;
56 sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
57 clk = devm_clk_get_optional(dev, "not_an_existing_clock");
66 int sandbox_clk_test_get_bulk(struct udevice *dev)
68 struct sandbox_clk_test *sbct = dev_get_priv(dev);
70 return clk_get_bulk(dev, &sbct->bulk);
73 ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
75 struct sandbox_clk_test *sbct = dev_get_priv(dev);
77 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
80 return clk_get_rate(sbct->clkps[id]);
83 ulong sandbox_clk_test_round_rate(struct udevice *dev, int id, ulong rate)
85 struct sandbox_clk_test *sbct = dev_get_priv(dev);
87 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
90 return clk_round_rate(sbct->clkps[id], rate);
93 ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
95 struct sandbox_clk_test *sbct = dev_get_priv(dev);
97 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
100 return clk_set_rate(sbct->clkps[id], rate);
103 int sandbox_clk_test_enable(struct udevice *dev, int id)
105 struct sandbox_clk_test *sbct = dev_get_priv(dev);
107 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
110 return clk_enable(sbct->clkps[id]);
113 int sandbox_clk_test_enable_bulk(struct udevice *dev)
115 struct sandbox_clk_test *sbct = dev_get_priv(dev);
117 return clk_enable_bulk(&sbct->bulk);
120 int sandbox_clk_test_disable(struct udevice *dev, int id)
122 struct sandbox_clk_test *sbct = dev_get_priv(dev);
124 if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
127 return clk_disable(sbct->clkps[id]);
130 int sandbox_clk_test_disable_bulk(struct udevice *dev)
132 struct sandbox_clk_test *sbct = dev_get_priv(dev);
134 return clk_disable_bulk(&sbct->bulk);
137 int sandbox_clk_test_free(struct udevice *dev)
139 struct sandbox_clk_test *sbct = dev_get_priv(dev);
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 clk_free(&sbct->clks[i]);
149 int sandbox_clk_test_release_bulk(struct udevice *dev)
151 struct sandbox_clk_test *sbct = dev_get_priv(dev);
153 return clk_release_bulk(&sbct->bulk);
156 int sandbox_clk_test_valid(struct udevice *dev)
158 struct sandbox_clk_test *sbct = dev_get_priv(dev);
161 for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
162 if (!clk_valid(sbct->clkps[i]))
163 if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
170 static int sandbox_clk_test_probe(struct udevice *dev)
172 struct sandbox_clk_test *sbct = dev_get_priv(dev);
175 for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
176 sbct->clkps[i] = &sbct->clks[i];
177 for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
178 sbct->clkps[i] = NULL;
183 static const struct udevice_id sandbox_clk_test_ids[] = {
184 { .compatible = "sandbox,clk-test" },
188 U_BOOT_DRIVER(sandbox_clk_test) = {
189 .name = "sandbox_clk_test",
191 .of_match = sandbox_clk_test_ids,
192 .probe = sandbox_clk_test_probe,
193 .priv_auto = sizeof(struct sandbox_clk_test),