1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
8 #include <power-domain-uclass.h>
11 #define MAX_DOMAINS 32
13 struct bcm6328_power_domain {
17 static int bcm6328_power_domain_request(struct power_domain *power_domain)
19 if (power_domain->id >= MAX_DOMAINS)
25 static int bcm6328_power_domain_free(struct power_domain *power_domain)
30 static int bcm6328_power_domain_on(struct power_domain *power_domain)
32 struct bcm6328_power_domain *priv = dev_get_priv(power_domain->dev);
34 clrbits_be32(priv->regs, BIT(power_domain->id));
39 static int bcm6328_power_domain_off(struct power_domain *power_domain)
41 struct bcm6328_power_domain *priv = dev_get_priv(power_domain->dev);
43 setbits_be32(priv->regs, BIT(power_domain->id));
48 static int bcm6328_power_domain_probe(struct udevice *dev)
50 struct bcm6328_power_domain *priv = dev_get_priv(dev);
54 addr = devfdt_get_addr_size_index(dev, 0, &size);
55 if (addr == FDT_ADDR_T_NONE)
58 priv->regs = ioremap(addr, size);
63 static const struct udevice_id bcm6328_power_domain_ids[] = {
64 { .compatible = "brcm,bcm6328-power-domain" },
68 struct power_domain_ops bcm6328_power_domain_ops = {
69 .free = bcm6328_power_domain_free,
70 .off = bcm6328_power_domain_off,
71 .on = bcm6328_power_domain_on,
72 .request = bcm6328_power_domain_request,
75 U_BOOT_DRIVER(bcm6328_power_domain) = {
76 .name = "bcm6328_power_domain",
77 .id = UCLASS_POWER_DOMAIN,
78 .of_match = bcm6328_power_domain_ids,
79 .ops = &bcm6328_power_domain_ops,
80 .priv_auto_alloc_size = sizeof(struct bcm6328_power_domain),
81 .probe = bcm6328_power_domain_probe,