[PATCH v2 02/19] power: reset: atc260x-poweroff: Use devm_register_sys_off_handler(POWER_OFF)

Andrew Davis
2024-02-05T19:44:58Z

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

Signed-off-by: Andrew Davis <afd@ti.com>
---
drivers/power/reset/atc260x-poweroff.c | 38 ++++++++++----------------
1 file changed, 14 insertions(+), 24 deletions(-)

diff --git a/drivers/power/reset/atc260x-poweroff.c b/drivers/power/reset/atc260x-poweroff.c
index ce2748d3282c3..e3e4621ccb1dd 100644
--- a/drivers/power/reset/atc260x-poweroff.c
+++ b/drivers/power/reset/atc260x-poweroff.c
@@ -19,9 +19,6 @@ struct atc260x_pwrc {
int (*do_poweroff)(const struct atc260x_pwrc *pwrc, bool restart);
};

-/* Global variable needed only for pm_power_off */
-static struct atc260x_pwrc *atc260x_pwrc_data;
-
static int atc2603c_do_poweroff(const struct atc260x_pwrc *pwrc, bool restart)
{
int ret, deep_sleep = 0;
@@ -164,11 +161,15 @@ static int atc2609a_init(const struct atc260x_pwrc *pwrc)
return ret;
}

-static void atc260x_pwrc_pm_handler(void)
+static int atc260x_pwrc_pm_handler(struct sys_off_data *data)
{
- atc260x_pwrc_data->do_poweroff(atc260x_pwrc_data, false);
+ struct atc260x_pwrc *pwrc = data->cb_data;
+
+ pwrc->do_poweroff(pwrc, false);

WARN_ONCE(1, "Unable to power off system\n");
+
+ return NOTIFY_DONE;
}

static int atc260x_pwrc_restart_handler(struct sys_off_data *data)
@@ -211,14 +212,14 @@ static int atc260x_pwrc_probe(struct platform_device *pdev)
if (ret)
return ret;

- platform_set_drvdata(pdev, priv);
-
- if (!pm_power_off) {
- atc260x_pwrc_data = priv;
- pm_power_off = atc260x_pwrc_pm_handler;
- } else {
- dev_warn(priv->dev, "Poweroff callback already assigned\n");
- }
+ ret = devm_register_sys_off_handler(priv->dev,
+ SYS_OFF_MODE_POWER_OFF,
+ SYS_OFF_PRIO_DEFAULT,
+ atc260x_pwrc_pm_handler,
+ priv);
+ if (ret)
+ dev_err(priv->dev, "failed to register power-off handler: %d\n",
+ ret);

ret = devm_register_sys_off_handler(priv->dev,
SYS_OFF_MODE_RESTART,
@@ -232,19 +233,8 @@ static int atc260x_pwrc_probe(struct platform_device *pdev)
return ret;
}

-static void atc260x_pwrc_remove(struct platform_device *pdev)
-{
- struct atc260x_pwrc *priv = platform_get_drvdata(pdev);
-
- if (atc260x_pwrc_data == priv) {
- pm_power_off = NULL;
- atc260x_pwrc_data = NULL;
- }
-}
-
static struct platform_driver atc260x_pwrc_driver = {
.probe = atc260x_pwrc_probe,
- .remove_new = atc260x_pwrc_remove,
.driver = {
.name = "atc260x-pwrc",
},
--
2.39.2