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ACPI: power: Switch to sys-off handler API 

Switch to sys-off API that replaces legacy pm_power_off callbacks,
allowing us to remove global pm_* variables and support chaining of
all restart and power-off modes consistently.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dmitry Osipenko 2022-05-10 02:32:30 +03:00 committed by Rafael J. Wysocki
parent bf8d73b934
commit 98f30d0ecf
1 changed files with 12 additions and 4 deletions
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16
drivers/acpi/sleep.c
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@ -1023,20 +1023,22 @@ static void acpi_sleep_hibernate_setup(void)
static inline void acpi_sleep_hibernate_setup(void) {}
#endif /* !CONFIG_HIBERNATION */
static void acpi_power_off_prepare(void)
static int acpi_power_off_prepare(struct sys_off_data *data)
{
/* Prepare to power off the system */
acpi_sleep_prepare(ACPI_STATE_S5);
acpi_disable_all_gpes();
acpi_os_wait_events_complete();
return NOTIFY_DONE;
}
static void acpi_power_off(void)
static int acpi_power_off(struct sys_off_data *data)
{
/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
pr_debug("%s called\n", __func__);
local_irq_disable();
acpi_enter_sleep_state(ACPI_STATE_S5);
return NOTIFY_DONE;
}
int __init acpi_sleep_init(void)
@ -1055,8 +1057,14 @@ int __init acpi_sleep_init(void)
if (acpi_sleep_state_supported(ACPI_STATE_S5)) {
sleep_states[ACPI_STATE_S5] = 1;
pm_power_off_prepare = acpi_power_off_prepare;
pm_power_off = acpi_power_off;
register_sys_off_handler(SYS_OFF_MODE_POWER_OFF_PREPARE,
SYS_OFF_PRIO_FIRMWARE,
acpi_power_off_prepare, NULL);
register_sys_off_handler(SYS_OFF_MODE_POWER_OFF,
SYS_OFF_PRIO_FIRMWARE,
acpi_power_off, NULL);
} else {
acpi_no_s5 = true;
}