From 7f2d6a02498ce3fa7771893072e81b31f9bd64b2 Mon Sep 17 00:00:00 2001
From: Paolo Sabatino <paolo.sabatino@gmail.com>
Date: Fri, 24 Mar 2023 17:15:16 +0000
Subject: [PATCH] register act8846 restart handler for SIPC function

---
 drivers/regulator/act8865-regulator.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/regulator/act8865-regulator.c b/drivers/regulator/act8865-regulator.c
index 53f2c75cd..e45ad8430 100644
--- a/drivers/regulator/act8865-regulator.c
+++ b/drivers/regulator/act8865-regulator.c
@@ -20,6 +20,7 @@
 #include <linux/regulator/of_regulator.h>
 #include <linux/regmap.h>
 #include <dt-bindings/regulator/active-semi,8865-regulator.h>
+#include <linux/reboot.h>
 
 /*
  * ACT8600 Global Register Map.
@@ -141,6 +142,8 @@
 #define	ACT8865_VOLTAGE_NUM	64
 #define ACT8600_SUDCDC_VOLTAGE_NUM	256
 
+#define ACT8846_SIPC_MASK 0x01
+
 struct act8865 {
 	struct regmap *regmap;
 	int off_reg;
@@ -582,6 +585,22 @@ static void act8865_power_off(void)
 	while (1);
 }
 
+static int act8846_power_cycle(struct notifier_block *this,
+		unsigned long code, void *unused)
+{
+	struct act8865 *act8846;
+
+	act8846 = i2c_get_clientdata(act8865_i2c_client);
+	regmap_write(act8846->regmap, ACT8846_GLB_OFF_CTRL, ACT8846_SIPC_MASK);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block act8846_restart_handler = {
+	.notifier_call = act8846_power_cycle,
+	.priority = 129,
+};
+
 static int act8600_charger_get_status(struct regmap *map)
 {
 	unsigned int val;
@@ -733,6 +752,14 @@ static int act8865_pmic_probe(struct i2c_client *client)
 		} else {
 			dev_err(dev, "Failed to set poweroff capability, already defined\n");
 		}
+
+		if (type == ACT8846) {
+			act8865_i2c_client = client;
+			ret = register_restart_handler(&act8846_restart_handler);
+			if (ret)
+				pr_err("%s: cannot register restart handler, %d\n",
+					__func__, ret);
+		}
 	}
 
 	/* Finally register devices */
-- 
2.34.1