79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
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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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#define MAX_DOMAINS 32
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struct bcm6328_power_domain {
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void __iomem *regs;
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};
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static int bcm6328_power_domain_request(struct power_domain *power_domain)
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{
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if (power_domain->id >= MAX_DOMAINS)
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return -EINVAL;
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return 0;
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}
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static int bcm6328_power_domain_free(struct power_domain *power_domain)
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{
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return 0;
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}
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static int bcm6328_power_domain_on(struct power_domain *power_domain)
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{
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struct bcm6328_power_domain *priv = dev_get_priv(power_domain->dev);
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clrbits_be32(priv->regs, BIT(power_domain->id));
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return 0;
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}
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static int bcm6328_power_domain_off(struct power_domain *power_domain)
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{
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struct bcm6328_power_domain *priv = dev_get_priv(power_domain->dev);
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setbits_be32(priv->regs, BIT(power_domain->id));
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return 0;
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}
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static int bcm6328_power_domain_probe(struct udevice *dev)
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{
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struct bcm6328_power_domain *priv = dev_get_priv(dev);
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priv->regs = dev_remap_addr(dev);
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if (!priv->regs)
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return -EINVAL;
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return 0;
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}
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static const struct udevice_id bcm6328_power_domain_ids[] = {
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{ .compatible = "brcm,bcm6328-power-domain" },
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{ /* sentinel */ }
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};
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struct power_domain_ops bcm6328_power_domain_ops = {
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.free = bcm6328_power_domain_free,
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.off = bcm6328_power_domain_off,
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.on = bcm6328_power_domain_on,
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.request = bcm6328_power_domain_request,
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};
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U_BOOT_DRIVER(bcm6328_power_domain) = {
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.name = "bcm6328_power_domain",
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.id = UCLASS_POWER_DOMAIN,
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.of_match = bcm6328_power_domain_ids,
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.ops = &bcm6328_power_domain_ops,
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.priv_auto_alloc_size = sizeof(struct bcm6328_power_domain),
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.probe = bcm6328_power_domain_probe,
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};
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