[J-u-boot.git] / drivers / clk / clk_sandbox_test.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2016, NVIDIA CORPORATION.
 */

#include <dm.h>
#include <clk.h>
#include <malloc.h>
#include <asm/clk.h>
#include <dm/device_compat.h>
#include <linux/err.h>

static const char * const sandbox_clk_test_names[] = {
	[SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
	[SANDBOX_CLK_TEST_ID_SPI] = "spi",
	[SANDBOX_CLK_TEST_ID_I2C] = "i2c",
	[SANDBOX_CLK_TEST_ID_I2C_ROOT] = "i2c_root",
};

int sandbox_clk_test_get(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	int i, ret;

	for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
		ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
				      &sbct->clks[i]);
		if (ret)
			return ret;
	}

	return 0;
}

int sandbox_clk_test_devm_get(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	struct clk *clk;

	clk = devm_clk_get(dev, "no-an-existing-clock");
	if (!IS_ERR(clk)) {
		dev_err(dev, "devm_clk_get() should have failed\n");
		return -EINVAL;
	}

	clk = devm_clk_get(dev, "uart2");
	if (IS_ERR(clk))
		return PTR_ERR(clk);
	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;

	clk = devm_clk_get_optional(dev, "uart1");
	if (IS_ERR(clk))
		return PTR_ERR(clk);
	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;

	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
	clk = devm_clk_get_optional(dev, "not_an_existing_clock");
	if (IS_ERR(clk))
		return PTR_ERR(clk);
	if (clk)
		return -EINVAL;

	return 0;
}

int sandbox_clk_test_get_bulk(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	return clk_get_bulk(dev, &sbct->bulk);
}

ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
		return -EINVAL;

	return clk_get_rate(sbct->clkps[id]);
}

ulong sandbox_clk_test_round_rate(struct udevice *dev, int id, ulong rate)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
		return -EINVAL;

	return clk_round_rate(sbct->clkps[id], rate);
}

ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
		return -EINVAL;

	return clk_set_rate(sbct->clkps[id], rate);
}

int sandbox_clk_test_enable(struct udevice *dev, int id)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
		return -EINVAL;

	return clk_enable(sbct->clkps[id]);
}

int sandbox_clk_test_enable_bulk(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	return clk_enable_bulk(&sbct->bulk);
}

int sandbox_clk_test_disable(struct udevice *dev, int id)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
		return -EINVAL;

	return clk_disable(sbct->clkps[id]);
}

int sandbox_clk_test_disable_bulk(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	return clk_disable_bulk(&sbct->bulk);
}

int sandbox_clk_test_release_bulk(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);

	return clk_release_bulk(&sbct->bulk);
}

int sandbox_clk_test_valid(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	int i;

	for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
		if (!clk_valid(sbct->clkps[i]))
			if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
				return -EINVAL;
	}

	return 0;
}

static int sandbox_clk_test_probe(struct udevice *dev)
{
	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	int i;

	for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
		sbct->clkps[i] = &sbct->clks[i];
	for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
		sbct->clkps[i] = NULL;

	return 0;
}

static const struct udevice_id sandbox_clk_test_ids[] = {
	{ .compatible = "sandbox,clk-test" },
	{ }
};

U_BOOT_DRIVER(sandbox_clk_test) = {
	.name = "sandbox_clk_test",
	.id = UCLASS_MISC,
	.of_match = sandbox_clk_test_ids,
	.probe = sandbox_clk_test_probe,
	.priv_auto	= sizeof(struct sandbox_clk_test),
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0
135aa950 SW	2	/*
135aa950 SW	3	* Copyright (c) 2016, NVIDIA CORPORATION.
135aa950 SW	4	*/
135aa950 SW	5
135aa950 SW	6	#include <dm.h>
135aa950 SW	7	#include <clk.h>
336d4615	8	#include <malloc.h>
135aa950	9	#include <asm/clk.h>
336d4615	10	#include <dm/device_compat.h>
61b29b82	11	#include <linux/err.h>
135aa950	12
135aa950 SW	13	static const char * const sandbox_clk_test_names[] = {
	14	[SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
	15	[SANDBOX_CLK_TEST_ID_SPI] = "spi",
	16	[SANDBOX_CLK_TEST_ID_I2C] = "i2c",
d3061824	17	[SANDBOX_CLK_TEST_ID_I2C_ROOT] = "i2c_root",
135aa950 SW	18	};
	19
	20	int sandbox_clk_test_get(struct udevice *dev)
	21	{
	22	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	23	int i, ret;
	24
dd2e0ce2	25	for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
135aa950 SW	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
dd2e0ce2 JJH	35	int 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
65388d0d NA	66	int 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
135aa950 SW	73	ulong 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
dd2e0ce2	80	return clk_get_rate(sbct->clkps[id]);
135aa950 SW	81	}
135aa950 SW	82
2983ad55 DB	83	ulong 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
135aa950 SW	93	ulong 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
dd2e0ce2	100	return clk_set_rate(sbct->clkps[id], rate);
135aa950 SW	101	}
	102
	103	int 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
dd2e0ce2	110	return clk_enable(sbct->clkps[id]);
135aa950 SW	111	}
135aa950 SW	112
65388d0d NA	113	int 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
135aa950 SW	120	int 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
dd2e0ce2	127	return clk_disable(sbct->clkps[id]);
135aa950 SW	128	}
135aa950 SW	129
65388d0d NA	130	int 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
65388d0d NA	137	int sandbox_clk_test_release_bulk(struct udevice *dev)
	138	{
	139	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	140
	141	return clk_release_bulk(&sbct->bulk);
	142	}
	143
1fe243a1 FG	144	int sandbox_clk_test_valid(struct udevice *dev)
	145	{
	146	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	147	int i;
	148
	149	for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
dd2e0ce2 JJH	150	if (!clk_valid(sbct->clkps[i]))
	151	if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
	152	return -EINVAL;
1fe243a1 FG	153	}
	154
	155	return 0;
	156	}
	157
dd2e0ce2 JJH	158	static int sandbox_clk_test_probe(struct udevice *dev)
	159	{
	160	struct sandbox_clk_test *sbct = dev_get_priv(dev);
	161	int i;
	162
	163	for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
	164	sbct->clkps[i] = &sbct->clks[i];
	165	for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
	166	sbct->clkps[i] = NULL;
	167
	168	return 0;
	169	}
	170
135aa950 SW	171	static const struct udevice_id sandbox_clk_test_ids[] = {
	172	{ .compatible = "sandbox,clk-test" },
	173	{ }
	174	};
	175
	176	U_BOOT_DRIVER(sandbox_clk_test) = {
	177	.name = "sandbox_clk_test",
	178	.id = UCLASS_MISC,
	179	.of_match = sandbox_clk_test_ids,
dd2e0ce2	180	.probe = sandbox_clk_test_probe,
41575d8e	181	.priv_auto = sizeof(struct sandbox_clk_test),
135aa950	182	};