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power: reset: as3722-poweroff: Use devm_register_sys_off_handler(POWER_OFF)

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Use device life-cycle managed register function to simplify probe and
exit paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240212162831.67838-16-afd@ti.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andrew Davis 2024-02-12 10:28:27 -06:00 committed by Sebastian Reichel
parent 77b61173c2
commit 348fde771c
1 changed files with 11 additions and 19 deletions
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30
drivers/power/reset/as3722-poweroff.c
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@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/slab.h>
struct as3722_poweroff {
@ -18,22 +19,18 @@ struct as3722_poweroff {
struct as3722 *as3722;
};
static struct as3722_poweroff *as3722_pm_poweroff;
static void as3722_pm_power_off(void)
static int as3722_pm_power_off(struct sys_off_data *data)
{
struct as3722_poweroff *as3722_pm_poweroff = data->cb_data;
int ret;
if (!as3722_pm_poweroff) {
pr_err("AS3722 poweroff is not initialised\n");
return;
}
ret = as3722_update_bits(as3722_pm_poweroff->as3722,
AS3722_RESET_CONTROL_REG, AS3722_POWER_OFF, AS3722_POWER_OFF);
if (ret < 0)
dev_err(as3722_pm_poweroff->dev,
"RESET_CONTROL_REG update failed, %d\n", ret);
return NOTIFY_DONE;
}
static int as3722_poweroff_probe(struct platform_device *pdev)
@ -54,26 +51,21 @@ static int as3722_poweroff_probe(struct platform_device *pdev)
as3722_poweroff->as3722 = dev_get_drvdata(pdev->dev.parent);
as3722_poweroff->dev = &pdev->dev;
as3722_pm_poweroff = as3722_poweroff;
if (!pm_power_off)
pm_power_off = as3722_pm_power_off;
return devm_register_sys_off_handler(as3722_poweroff->dev,
SYS_OFF_MODE_POWER_OFF,
SYS_OFF_PRIO_DEFAULT,
as3722_pm_power_off,
as3722_poweroff);
return 0;
}
static void as3722_poweroff_remove(struct platform_device *pdev)
{
if (pm_power_off == as3722_pm_power_off)
pm_power_off = NULL;
as3722_pm_poweroff = NULL;
}
static struct platform_driver as3722_poweroff_driver = {
.driver = {
.name = "as3722-power-off",
},
.probe = as3722_poweroff_probe,
.remove_new = as3722_poweroff_remove,
};
module_platform_driver(as3722_poweroff_driver);