// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 Linaro Ltd. * * Author: Ulf Hansson * * Implements PM domains using the generic PM domain for ux500. */ #include #include #include #include #include #include #include #include #include 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[] = { { .compatible = "stericsson,ux500-pm-domains", }, { }, }; static int ux500_pm_domains_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct genpd_onecell_data *genpd_data; int i; 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; } static struct platform_driver ux500_pm_domains_driver = { .probe = ux500_pm_domains_probe, .driver = { .name = "ux500_pm_domains", .of_match_table = ux500_pm_domain_matches, }, }; static int __init ux500_pm_domains_init(void) { return platform_driver_register(&ux500_pm_domains_driver); } arch_initcall(ux500_pm_domains_init);