b43f11e5b4
To simplify with maintenance let's move the ux500 power-domain driver to the new genpd directory. Going forward, patches are intended to be managed through a separate git tree, according to MAINTAINERS. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2014 Linaro Ltd.
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*
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* Author: Ulf Hansson <ulf.hansson@linaro.org>
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*
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* Implements PM domains using the generic PM domain for ux500.
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/printk.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include <linux/pm_domain.h>
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#include <dt-bindings/arm/ux500_pm_domains.h>
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static int pd_power_off(struct generic_pm_domain *domain)
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{
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/*
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* Handle the gating of the PM domain regulator here.
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*
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* Drivers/subsystems handling devices in the PM domain needs to perform
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* register context save/restore from their respective runtime PM
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* callbacks, to be able to enable PM domain gating/ungating.
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*/
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return 0;
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}
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static int pd_power_on(struct generic_pm_domain *domain)
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{
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/*
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* Handle the ungating of the PM domain regulator here.
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*
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* Drivers/subsystems handling devices in the PM domain needs to perform
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* register context save/restore from their respective runtime PM
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* callbacks, to be able to enable PM domain gating/ungating.
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*/
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return 0;
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}
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static struct generic_pm_domain ux500_pm_domain_vape = {
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.name = "VAPE",
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.power_off = pd_power_off,
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.power_on = pd_power_on,
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};
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static struct generic_pm_domain *ux500_pm_domains[NR_DOMAINS] = {
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[DOMAIN_VAPE] = &ux500_pm_domain_vape,
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};
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static const struct of_device_id ux500_pm_domain_matches[] = {
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{ .compatible = "stericsson,ux500-pm-domains", },
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{ },
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};
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static int ux500_pm_domains_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct genpd_onecell_data *genpd_data;
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int i;
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if (!np)
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return -ENODEV;
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genpd_data = kzalloc(sizeof(*genpd_data), GFP_KERNEL);
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if (!genpd_data)
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return -ENOMEM;
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genpd_data->domains = ux500_pm_domains;
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genpd_data->num_domains = ARRAY_SIZE(ux500_pm_domains);
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for (i = 0; i < ARRAY_SIZE(ux500_pm_domains); ++i)
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pm_genpd_init(ux500_pm_domains[i], NULL, false);
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of_genpd_add_provider_onecell(np, genpd_data);
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return 0;
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}
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static struct platform_driver ux500_pm_domains_driver = {
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.probe = ux500_pm_domains_probe,
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.driver = {
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.name = "ux500_pm_domains",
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.of_match_table = ux500_pm_domain_matches,
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},
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};
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static int __init ux500_pm_domains_init(void)
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{
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return platform_driver_register(&ux500_pm_domains_driver);
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}
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arch_initcall(ux500_pm_domains_init);
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