// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Linaro Ltd. * * Author: Ulf Hansson <ulf.hansson@linaro.org> * * Implements PM domains using the generic PM domain for ux500. */ #include <linux/printk.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/of.h> #include <linux/pm_domain.h> #include <dt-bindings/arm/ux500_pm_domains.h> #include "pm_domains.h" static int pd_power_off(struct generic_pm_domain *domain) { /* * Handle the gating of the PM domain regulator here. * * Drivers/subsystems handling devices in the PM domain needs to perform * register context save/restore from their respective runtime PM * callbacks, to be able to enable PM domain gating/ungating. */ return 0; } static int pd_power_on(struct generic_pm_domain *domain) { /* * Handle the ungating of the PM domain regulator here. * * Drivers/subsystems handling devices in the PM domain needs to perform * register context save/restore from their respective runtime PM * callbacks, to be able to enable PM domain gating/ungating. */ return 0; } static struct generic_pm_domain ux500_pm_domain_vape = { .name = "VAPE", .power_off = pd_power_off, .power_on = pd_power_on, }; static struct generic_pm_domain *ux500_pm_domains[NR_DOMAINS] = { [DOMAIN_VAPE] = &ux500_pm_domain_vape, }; static const struct of_device_id ux500_pm_domain_matches[] __initconst = { { .compatible = "stericsson,ux500-pm-domains", }, { }, }; int __init ux500_pm_domains_init(void) { struct device_node *np; struct genpd_onecell_data *genpd_data; int i; np = of_find_matching_node(NULL, ux500_pm_domain_matches); if (!np) return -ENODEV; genpd_data = kzalloc(sizeof(*genpd_data), GFP_KERNEL); if (!genpd_data) return -ENOMEM; genpd_data->domains = ux500_pm_domains; genpd_data->num_domains = ARRAY_SIZE(ux500_pm_domains); for (i = 0; i < ARRAY_SIZE(ux500_pm_domains); ++i) pm_genpd_init(ux500_pm_domains[i], NULL, false); of_genpd_add_provider_onecell(np, genpd_data); return 0; }