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ARM: ux500: Convert power-domain code into a regular platform driver

Browse Source 
To make the code more standalone and moveable, let's convert it into a
platform driver.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ulf Hansson 2023-06-30 16:11:57 +02:00
parent 444ffc820d
commit bd4ce2d7f9
3 changed files with 20 additions and 27 deletions
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5
arch/arm/mach-ux500/cpu-db8500.c
View File

@ -26,8 +26,6 @@
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
#include "pm_domains.h"
static int __init ux500_l2x0_unlock(void)
{
int i;
@ -115,9 +113,6 @@ static const struct of_device_id u8500_local_bus_nodes[] = {
static void __init u8500_init_machine(void)
{
/* Initialize ux500 power domains */
ux500_pm_domains_init();
of_platform_populate(NULL, u8500_local_bus_nodes,
NULL, NULL);
}

25
arch/arm/mach-ux500/pm_domains.c
View File

@ -6,6 +6,9 @@
*
* Implements PM domains using the generic PM domain for ux500.
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/err.h>
@ -13,7 +16,6 @@
#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)
{
@ -49,18 +51,17 @@ 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 = {
static const struct of_device_id ux500_pm_domain_matches[] = {
{ .compatible = "stericsson,ux500-pm-domains", },
{ },
};
int __init ux500_pm_domains_init(void)
static int ux500_pm_domains_probe(struct platform_device *pdev)
{
struct device_node *np;
struct device_node *np = pdev->dev.of_node;
struct genpd_onecell_data *genpd_data;
int i;
np = of_find_matching_node(NULL, ux500_pm_domain_matches);
if (!np)
return -ENODEV;
@ -77,3 +78,17 @@ int __init ux500_pm_domains_init(void)
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);

17
arch/arm/mach-ux500/pm_domains.h
View File

@ -1,17 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2014 Linaro Ltd.
*
* Author: Ulf Hansson <ulf.hansson@linaro.org>
*/
#ifndef __MACH_UX500_PM_DOMAINS_H
#define __MACH_UX500_PM_DOMAINS_H
#ifdef CONFIG_PM_GENERIC_DOMAINS
extern int __init ux500_pm_domains_init(void);
#else
static inline int ux500_pm_domains_init(void) { return 0; }
#endif
#endif