444d2d33d8
of_device_ids (i.e. compatible strings and the respective data) are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs in arch/arm as const, too. While at it also add some __initconst annotations. Acked-by: Jason Cooper <jason@lakedameon.net> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
79 lines
2 KiB
C
79 lines
2 KiB
C
/*
|
|
* Copyright (C) 2014 Linaro Ltd.
|
|
*
|
|
* Author: Ulf Hansson <ulf.hansson@linaro.org>
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*
|
|
* 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;
|
|
}
|