[PATCH v4 23/25] ACPI: power: Switch to sys-off handler API

Dmitry Osipenko
2021-11-26T18:26:45Z

Switch to sys-off API that replaces legacy pm_power_off callbacks.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/acpi/sleep.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index eaa47753b758..2e613fddd614 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -47,19 +47,11 @@ static void acpi_sleep_tts_switch(u32 acpi_state)
}
}

-static int tts_notify_reboot(struct notifier_block *this,
- unsigned long code, void *x)
+static void tts_reboot_prepare(struct reboot_prep_data *data)
{
acpi_sleep_tts_switch(ACPI_STATE_S5);
- return NOTIFY_DONE;
}

-static struct notifier_block tts_notifier = {
- .notifier_call = tts_notify_reboot,
- .next = NULL,
- .priority = 0,
-};
-
static int acpi_sleep_prepare(u32 acpi_state)
{
#ifdef CONFIG_ACPI_SLEEP
@@ -1020,7 +1012,7 @@ 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 void acpi_power_off_prepare(struct power_off_prep_data *data)
{
/* Prepare to power off the system */
acpi_sleep_prepare(ACPI_STATE_S5);
@@ -1028,7 +1020,7 @@ static void acpi_power_off_prepare(void)
acpi_os_wait_events_complete();
}

-static void acpi_power_off(void)
+static void acpi_power_off(struct power_off_data *data)
{
/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
pr_debug("%s called\n", __func__);
@@ -1036,6 +1028,11 @@ static void acpi_power_off(void)
acpi_enter_sleep_state(ACPI_STATE_S5);
}

+static struct sys_off_handler acpi_sys_off_handler = {
+ .power_off_priority = POWEROFF_PRIO_FIRMWARE,
+ .reboot_prepare_cb = tts_reboot_prepare,
+};
+
int __init acpi_sleep_init(void)
{
char supported[ACPI_S_STATE_COUNT * 3 + 1];
@@ -1052,8 +1049,8 @@ 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;
+ acpi_sys_off_handler.power_off_cb = acpi_power_off;
+ acpi_sys_off_handler.power_off_prepare_cb = acpi_power_off_prepare;
} else {
acpi_no_s5 = true;
}
@@ -1069,6 +1066,6 @@ int __init acpi_sleep_init(void)
* Register the tts_notifier to reboot notifier list so that the _TTS
* object can also be evaluated when the system enters S5.
*/
- register_reboot_notifier(&tts_notifier);
+ register_sys_off_handler(&acpi_sys_off_handler);
return 0;
}
--
2.33.1