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https://github.com/AsahiLinux/u-boot
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105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
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/*
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <dm.h>
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#include <power-domain-uclass.h>
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#include <asm/io.h>
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#include <asm/power-domain.h>
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#define SANDBOX_POWER_DOMAINS 3
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struct sandbox_power_domain {
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bool on[SANDBOX_POWER_DOMAINS];
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};
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static int sandbox_power_domain_request(struct power_domain *power_domain)
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{
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debug("%s(power_domain=%p)\n", __func__, power_domain);
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if (power_domain->id >= SANDBOX_POWER_DOMAINS)
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return -EINVAL;
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return 0;
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}
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static int sandbox_power_domain_free(struct power_domain *power_domain)
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{
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debug("%s(power_domain=%p)\n", __func__, power_domain);
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return 0;
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}
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static int sandbox_power_domain_on(struct power_domain *power_domain)
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{
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struct sandbox_power_domain *sbr = dev_get_priv(power_domain->dev);
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debug("%s(power_domain=%p)\n", __func__, power_domain);
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sbr->on[power_domain->id] = true;
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return 0;
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}
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static int sandbox_power_domain_off(struct power_domain *power_domain)
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{
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struct sandbox_power_domain *sbr = dev_get_priv(power_domain->dev);
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debug("%s(power_domain=%p)\n", __func__, power_domain);
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sbr->on[power_domain->id] = false;
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return 0;
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}
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static int sandbox_power_domain_bind(struct udevice *dev)
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{
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debug("%s(dev=%p)\n", __func__, dev);
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return 0;
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}
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static int sandbox_power_domain_probe(struct udevice *dev)
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{
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debug("%s(dev=%p)\n", __func__, dev);
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return 0;
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}
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static const struct udevice_id sandbox_power_domain_ids[] = {
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{ .compatible = "sandbox,power-domain" },
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{ }
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};
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struct power_domain_ops sandbox_power_domain_ops = {
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.request = sandbox_power_domain_request,
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.free = sandbox_power_domain_free,
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.on = sandbox_power_domain_on,
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.off = sandbox_power_domain_off,
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};
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U_BOOT_DRIVER(sandbox_power_domain) = {
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.name = "sandbox_power_domain",
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.id = UCLASS_POWER_DOMAIN,
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.of_match = sandbox_power_domain_ids,
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.bind = sandbox_power_domain_bind,
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.probe = sandbox_power_domain_probe,
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.priv_auto_alloc_size = sizeof(struct sandbox_power_domain),
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.ops = &sandbox_power_domain_ops,
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};
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int sandbox_power_domain_query(struct udevice *dev, unsigned long id)
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{
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struct sandbox_power_domain *sbr = dev_get_priv(dev);
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debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);
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if (id >= SANDBOX_POWER_DOMAINS)
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return -EINVAL;
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return sbr->on[id];
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}
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