diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 599c836507ff..66bae5cea4f9 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -624,6 +624,9 @@ static void validate_mcu_fw_version(struct hid_device *hdev, int idProduct)
 		hid_warn(hdev,
 			"The MCU firmware version must be %d or greater to avoid issues with suspend.\n",
 			min_version);
+	} else {
+		set_ally_mcu_hack(false);
+		set_ally_mcu_powersave(true);
 	}
 }
 
@@ -1430,4 +1433,5 @@ static struct hid_driver asus_driver = {
 };
 module_hid_driver(asus_driver);
 
+MODULE_IMPORT_NS("ASUS_WMI");
 MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 38ef778e8c19..10936a091c42 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -142,16 +142,20 @@ module_param(fnlock_default, bool, 0444);
 #define ASUS_MINI_LED_2024_STRONG	0x01
 #define ASUS_MINI_LED_2024_OFF		0x02
 
-/* Controls the power state of the USB0 hub on ROG Ally which input is on */
 #define ASUS_USB0_PWR_EC0_CSEE "\\_SB.PCI0.SBRG.EC0.CSEE"
-/* 300ms so far seems to produce a reliable result on AC and battery */
-#define ASUS_USB0_PWR_EC0_CSEE_WAIT 1500
+/*
+ * The period required to wait after screen off/on/s2idle.check in MS.
+ * Time here greatly impacts the wake behaviour. Used in suspend/wake.
+ */
+#define ASUS_USB0_PWR_EC0_CSEE_WAIT	600
+#define ASUS_USB0_PWR_EC0_CSEE_OFF	0xB7
+#define ASUS_USB0_PWR_EC0_CSEE_ON	0xB8
 
 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
 
 static int throttle_thermal_policy_write(struct asus_wmi *);
 
-static const struct dmi_system_id asus_ally_mcu_quirk[] = {
+static const struct dmi_system_id asus_rog_ally_device[] = {
 	{
 		.matches = {
 			DMI_MATCH(DMI_BOARD_NAME, "RC71L"),
@@ -274,9 +278,6 @@ struct asus_wmi {
 	u32 tablet_switch_dev_id;
 	bool tablet_switch_inverted;
 
-	/* The ROG Ally device requires the MCU USB device be disconnected before suspend */
-	bool ally_mcu_usb_switch;
-
 	enum fan_type fan_type;
 	enum fan_type gpu_fan_type;
 	enum fan_type mid_fan_type;
@@ -335,6 +336,9 @@ struct asus_wmi {
 	struct asus_wmi_driver *driver;
 };
 
+/* Global to allow setting externally without requiring driver data */
+static bool use_ally_mcu_hack;
+
 /* WMI ************************************************************************/
 
 static int asus_wmi_evaluate_method3(u32 method_id,
@@ -549,7 +553,7 @@ static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
 	return 0;
 }
 
-static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
+int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
 				 u32 *retval)
 {
 	return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
@@ -1343,6 +1347,44 @@ static ssize_t nv_temp_target_show(struct device *dev,
 static DEVICE_ATTR_RW(nv_temp_target);
 
 /* Ally MCU Powersave ********************************************************/
+
+/*
+ * The HID driver needs to check MCU version and set this to false if the MCU FW
+ * version is >= the minimum requirements. New FW do not need the hacks.
+ */
+void set_ally_mcu_hack(bool enabled)
+{
+	use_ally_mcu_hack = enabled;
+	pr_debug("%s Ally MCU suspend quirk\n",
+		 enabled ? "Enabled" : "Disabled");
+}
+EXPORT_SYMBOL_NS_GPL(set_ally_mcu_hack, "ASUS_WMI");
+
+/*
+ * mcu_powersave should be enabled always, as it is fixed in MCU FW versions:
+ * - v313 for Ally X
+ * - v319 for Ally 1
+ * The HID driver checks MCU versions and so should set this if requirements match
+ */
+void set_ally_mcu_powersave(bool enabled)
+{
+	int result, err;
+
+	err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MCU_POWERSAVE, enabled, &result);
+	if (err) {
+		pr_warn("Failed to set MCU powersave: %d\n", err);
+		return;
+	}
+	if (result > 1) {
+		pr_warn("Failed to set MCU powersave (result): 0x%x\n", result);
+		return;
+	}
+
+	pr_debug("%s MCU Powersave\n",
+		 enabled ? "Enabled" : "Disabled");
+}
+EXPORT_SYMBOL_NS_GPL(set_ally_mcu_powersave, "ASUS_WMI");
+
 static ssize_t mcu_powersave_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
 {
@@ -4711,6 +4753,18 @@ static int asus_wmi_add(struct platform_device *pdev)
 	if (err)
 		goto fail_platform;
 
+	use_ally_mcu_hack = acpi_has_method(NULL, ASUS_USB0_PWR_EC0_CSEE)
+				&& dmi_check_system(asus_rog_ally_device);
+	if (use_ally_mcu_hack && dmi_match(DMI_BOARD_NAME, "RC71")) {
+		/*
+		 * These steps ensure the device is in a valid good state, this is
+		 * especially important for the Ally 1 after a reboot.
+		 */
+		acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE,
+					   ASUS_USB0_PWR_EC0_CSEE_ON);
+		msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
+	}
+
 	/* ensure defaults for tunables */
 	asus->ppt_pl2_sppt = 5;
 	asus->ppt_pl1_spl = 5;
@@ -4723,8 +4777,6 @@ static int asus_wmi_add(struct platform_device *pdev)
 	asus->egpu_enable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU);
 	asus->dgpu_disable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_DGPU);
 	asus->kbd_rgb_state_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_STATE);
-	asus->ally_mcu_usb_switch = acpi_has_method(NULL, ASUS_USB0_PWR_EC0_CSEE)
-						&& dmi_check_system(asus_ally_mcu_quirk);
 
 	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE))
 		asus->mini_led_dev_id = ASUS_WMI_DEVID_MINI_LED_MODE;
@@ -4910,34 +4962,6 @@ static int asus_hotk_resume(struct device *device)
 	return 0;
 }
 
-static int asus_hotk_resume_early(struct device *device)
-{
-	struct asus_wmi *asus = dev_get_drvdata(device);
-
-	if (asus->ally_mcu_usb_switch) {
-		/* sleep required to prevent USB0 being yanked then reappearing rapidly */
-		if (ACPI_FAILURE(acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE, 0xB8)))
-			dev_err(device, "ROG Ally MCU failed to connect USB dev\n");
-		else
-			msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
-	}
-	return 0;
-}
-
-static int asus_hotk_prepare(struct device *device)
-{
-	struct asus_wmi *asus = dev_get_drvdata(device);
-
-	if (asus->ally_mcu_usb_switch) {
-		/* sleep required to ensure USB0 is disabled before sleep continues */
-		if (ACPI_FAILURE(acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE, 0xB7)))
-			dev_err(device, "ROG Ally MCU failed to disconnect USB dev\n");
-		else
-			msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
-	}
-	return 0;
-}
-
 static int asus_hotk_restore(struct device *device)
 {
 	struct asus_wmi *asus = dev_get_drvdata(device);
@@ -4978,11 +5002,34 @@ static int asus_hotk_restore(struct device *device)
 	return 0;
 }
 
+static void asus_ally_s2idle_restore(void)
+{
+	if (use_ally_mcu_hack) {
+		acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE,
+					   ASUS_USB0_PWR_EC0_CSEE_ON);
+		msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
+	}
+}
+
+static int asus_hotk_prepare(struct device *device)
+{
+	if (use_ally_mcu_hack) {
+		acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE,
+					   ASUS_USB0_PWR_EC0_CSEE_OFF);
+		msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
+	}
+	return 0;
+}
+
+/* Use only for Ally devices due to the wake_on_ac */
+static struct acpi_s2idle_dev_ops asus_ally_s2idle_dev_ops = {
+	.restore = asus_ally_s2idle_restore,
+};
+
 static const struct dev_pm_ops asus_pm_ops = {
 	.thaw = asus_hotk_thaw,
 	.restore = asus_hotk_restore,
 	.resume = asus_hotk_resume,
-	.resume_early = asus_hotk_resume_early,
 	.prepare = asus_hotk_prepare,
 };
 
@@ -5010,6 +5057,10 @@ static int asus_wmi_probe(struct platform_device *pdev)
 			return ret;
 	}
 
+	ret = acpi_register_lps0_dev(&asus_ally_s2idle_dev_ops);
+	if (ret)
+		pr_warn("failed to register LPS0 sleep handler in asus-wmi\n");
+
 	return asus_wmi_add(pdev);
 }
 
@@ -5042,6 +5093,7 @@ EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
 
 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
 {
+	acpi_unregister_lps0_dev(&asus_ally_s2idle_dev_ops);
 	platform_device_unregister(driver->platform_device);
 	platform_driver_unregister(&driver->platform_driver);
 	used = false;
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index 783e2a336861..9ca408480502 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -158,8 +158,21 @@
 #define ASUS_WMI_DSTS_LIGHTBAR_MASK	0x0000000F
 
 #if IS_REACHABLE(CONFIG_ASUS_WMI)
+void set_ally_mcu_hack(bool enabled);
+void set_ally_mcu_powersave(bool enabled);
+int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, u32 *retval);
 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval);
 #else
+static inline void set_ally_mcu_hack(bool enabled)
+{
+}
+static inline void set_ally_mcu_powersave(bool enabled)
+{
+}
+static inline int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, u32 *retval)
+{
+	return -ENODEV;
+}
 static inline int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
 					   u32 *retval)
 {
