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https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
// 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 <malloc.h>
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#include <power-domain-uclass.h>
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#include <asm/io.h>
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#include <linux/bitops.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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.rfree = 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 = sizeof(struct bcm6328_power_domain),
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.probe = bcm6328_power_domain_probe,
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};
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