Merge tag 'apple-soc-drivers-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux into soc/drivers

Apple SoC driver updates for 6.20

- Add a poweroff function to the RTKit library which will be required
  for the first USB4/Thunderbolt series I hope to submit next cycle.

* tag 'apple-soc-drivers-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux:
  soc: apple: rtkit: Add function to poweroff

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: arndb

drivers/soc/apple/rtkit.c

@@ -851,6 +851,22 @@ int apple_rtkit_shutdown(struct apple_rtkit *rtk)
 }
 EXPORT_SYMBOL_GPL(apple_rtkit_shutdown);
 
+int apple_rtkit_poweroff(struct apple_rtkit *rtk)
+{
+	int ret;
+
+	ret = apple_rtkit_set_ap_power_state(rtk, APPLE_RTKIT_PWR_STATE_OFF);
+	if (ret)
+		return ret;
+
+	ret = apple_rtkit_set_iop_power_state(rtk, APPLE_RTKIT_PWR_STATE_OFF);
+	if (ret)
+		return ret;
+
+	return apple_rtkit_reinit(rtk);
+}
+EXPORT_SYMBOL_GPL(apple_rtkit_poweroff);
+
 int apple_rtkit_idle(struct apple_rtkit *rtk)
 {
 	int ret;

include/linux/soc/apple/rtkit.h

@@ -125,6 +125,13 @@ int apple_rtkit_wake(struct apple_rtkit *rtk);
  */
 int apple_rtkit_shutdown(struct apple_rtkit *rtk);
 
+/*
+ * Put the co-processor into the lowest power state. Note that it usually
+ * is not possible to recover from this state without a full SoC reset.
+ */
+
+int apple_rtkit_poweroff(struct apple_rtkit *rtk);
+
 /*
  * Put the co-processor into idle mode
  */