[J-u-boot.git] / drivers / reset / sandbox-reset.c

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

#include <dm.h>
#include <log.h>
#include <malloc.h>
#include <reset-uclass.h>
#include <asm/io.h>
#include <asm/reset.h>

#define SANDBOX_RESET_SIGNALS 101

struct sandbox_reset_signal {
	bool asserted;
	bool requested;
};

struct sandbox_reset {
	struct sandbox_reset_signal signals[SANDBOX_RESET_SIGNALS];
};

static int sandbox_reset_request(struct reset_ctl *reset_ctl)
{
	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);

	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);

	if (reset_ctl->id >= SANDBOX_RESET_SIGNALS)
		return -EINVAL;

	sbr->signals[reset_ctl->id].requested = true;
	return 0;
}

static int sandbox_reset_free(struct reset_ctl *reset_ctl)
{
	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);

	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);

	sbr->signals[reset_ctl->id].requested = false;
	return 0;
}

static int sandbox_reset_assert(struct reset_ctl *reset_ctl)
{
	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);

	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);

	sbr->signals[reset_ctl->id].asserted = true;

	return 0;
}

static int sandbox_reset_deassert(struct reset_ctl *reset_ctl)
{
	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);

	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);

	sbr->signals[reset_ctl->id].asserted = false;

	return 0;
}

static int sandbox_reset_bind(struct udevice *dev)
{
	debug("%s(dev=%p)\n", __func__, dev);

	return 0;
}

static int sandbox_reset_probe(struct udevice *dev)
{
	debug("%s(dev=%p)\n", __func__, dev);

	return 0;
}

static const struct udevice_id sandbox_reset_ids[] = {
	{ .compatible = "sandbox,reset-ctl" },
	{ }
};

struct reset_ops sandbox_reset_reset_ops = {
	.request = sandbox_reset_request,
	.rfree = sandbox_reset_free,
	.rst_assert = sandbox_reset_assert,
	.rst_deassert = sandbox_reset_deassert,
};

U_BOOT_DRIVER(sandbox_reset) = {
	.name = "sandbox_reset",
	.id = UCLASS_RESET,
	.of_match = sandbox_reset_ids,
	.bind = sandbox_reset_bind,
	.probe = sandbox_reset_probe,
	.priv_auto	= sizeof(struct sandbox_reset),
	.ops = &sandbox_reset_reset_ops,
};

int sandbox_reset_query(struct udevice *dev, unsigned long id)
{
	struct sandbox_reset *sbr = dev_get_priv(dev);

	debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);

	if (id >= SANDBOX_RESET_SIGNALS)
		return -EINVAL;

	return sbr->signals[id].asserted;
}

int sandbox_reset_is_requested(struct udevice *dev, unsigned long id)
{
	struct sandbox_reset *sbr = dev_get_priv(dev);

	debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);

	if (id >= SANDBOX_RESET_SIGNALS)
		return -EINVAL;

	return sbr->signals[id].requested;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0
4581b717 SW	2	/*
4581b717 SW	3	* Copyright (c) 2016, NVIDIA CORPORATION.
4581b717 SW	4	*/
4581b717 SW	5
4581b717	6	#include <dm.h>
f7ae49fc	7	#include <log.h>
336d4615	8	#include <malloc.h>
4581b717 SW	9	#include <reset-uclass.h>
	10	#include <asm/io.h>
	11	#include <asm/reset.h>
	12
91f5f8b7	13	#define SANDBOX_RESET_SIGNALS 101
4581b717 SW	14
	15	struct sandbox_reset_signal {
	16	bool asserted;
bad24331	17	bool requested;
4581b717 SW	18	};
	19
	20	struct sandbox_reset {
	21	struct sandbox_reset_signal signals[SANDBOX_RESET_SIGNALS];
	22	};
	23
	24	static int sandbox_reset_request(struct reset_ctl *reset_ctl)
	25	{
bad24331 JJH	26	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
bad24331 JJH	27
4581b717 SW	28	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
	29
	30	if (reset_ctl->id >= SANDBOX_RESET_SIGNALS)
	31	return -EINVAL;
	32
bad24331	33	sbr->signals[reset_ctl->id].requested = true;
4581b717 SW	34	return 0;
	35	}
	36
	37	static int sandbox_reset_free(struct reset_ctl *reset_ctl)
	38	{
bad24331 JJH	39	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
bad24331 JJH	40
4581b717 SW	41	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
4581b717 SW	42
bad24331	43	sbr->signals[reset_ctl->id].requested = false;
4581b717 SW	44	return 0;
	45	}
	46
	47	static int sandbox_reset_assert(struct reset_ctl *reset_ctl)
	48	{
	49	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
	50
	51	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
	52
	53	sbr->signals[reset_ctl->id].asserted = true;
	54
	55	return 0;
	56	}
	57
	58	static int sandbox_reset_deassert(struct reset_ctl *reset_ctl)
	59	{
	60	struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
	61
	62	debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
	63
	64	sbr->signals[reset_ctl->id].asserted = false;
	65
	66	return 0;
	67	}
	68
	69	static int sandbox_reset_bind(struct udevice *dev)
	70	{
	71	debug("%s(dev=%p)\n", __func__, dev);
	72
	73	return 0;
	74	}
	75
	76	static int sandbox_reset_probe(struct udevice *dev)
	77	{
	78	debug("%s(dev=%p)\n", __func__, dev);
	79
	80	return 0;
	81	}
	82
	83	static const struct udevice_id sandbox_reset_ids[] = {
	84	{ .compatible = "sandbox,reset-ctl" },
	85	{ }
	86	};
	87
	88	struct reset_ops sandbox_reset_reset_ops = {
	89	.request = sandbox_reset_request,
94474b25	90	.rfree = sandbox_reset_free,
4581b717 SW	91	.rst_assert = sandbox_reset_assert,
	92	.rst_deassert = sandbox_reset_deassert,
	93	};
	94
	95	U_BOOT_DRIVER(sandbox_reset) = {
	96	.name = "sandbox_reset",
	97	.id = UCLASS_RESET,
	98	.of_match = sandbox_reset_ids,
	99	.bind = sandbox_reset_bind,
	100	.probe = sandbox_reset_probe,
41575d8e	101	.priv_auto = sizeof(struct sandbox_reset),
4581b717 SW	102	.ops = &sandbox_reset_reset_ops,
	103	};
	104
	105	int sandbox_reset_query(struct udevice *dev, unsigned long id)
	106	{
	107	struct sandbox_reset *sbr = dev_get_priv(dev);
	108
	109	debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);
	110
	111	if (id >= SANDBOX_RESET_SIGNALS)
	112	return -EINVAL;
	113
	114	return sbr->signals[id].asserted;
	115	}
bad24331 JJH	116
	117	int sandbox_reset_is_requested(struct udevice *dev, unsigned long id)
	118	{
	119	struct sandbox_reset *sbr = dev_get_priv(dev);
	120
	121	debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);
	122
	123	if (id >= SANDBOX_RESET_SIGNALS)
	124	return -EINVAL;
	125
	126	return sbr->signals[id].requested;
	127	}