mirror of
https://github.com/torvalds/linux.git
synced 2025-12-07 11:56:58 +00:00
a97fbc3ee3
Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2019 Paul Cercueil <paul@crapouillou.net>
|
|
*/
|
|
|
|
#include "cgu.h"
|
|
#include "pm.h"
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/syscore_ops.h>
|
|
|
|
#define CGU_REG_LCR 0x04
|
|
|
|
#define LCR_LOW_POWER_MODE BIT(0)
|
|
|
|
static void __iomem * __maybe_unused ingenic_cgu_base;
|
|
|
|
static int __maybe_unused ingenic_cgu_pm_suspend(void *data)
|
|
{
|
|
u32 val = readl(ingenic_cgu_base + CGU_REG_LCR);
|
|
|
|
writel(val | LCR_LOW_POWER_MODE, ingenic_cgu_base + CGU_REG_LCR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __maybe_unused ingenic_cgu_pm_resume(void *data)
|
|
{
|
|
u32 val = readl(ingenic_cgu_base + CGU_REG_LCR);
|
|
|
|
writel(val & ~LCR_LOW_POWER_MODE, ingenic_cgu_base + CGU_REG_LCR);
|
|
}
|
|
|
|
static const struct syscore_ops __maybe_unused ingenic_cgu_pm_ops = {
|
|
.suspend = ingenic_cgu_pm_suspend,
|
|
.resume = ingenic_cgu_pm_resume,
|
|
};
|
|
|
|
static struct syscore __maybe_unused ingenic_cgu_pm = {
|
|
.ops = &ingenic_cgu_pm_ops,
|
|
};
|
|
|
|
void ingenic_cgu_register_syscore(struct ingenic_cgu *cgu)
|
|
{
|
|
if (IS_ENABLED(CONFIG_PM_SLEEP)) {
|
|
ingenic_cgu_base = cgu->base;
|
|
register_syscore(&ingenic_cgu_pm);
|
|
}
|
|
}
|