drivers: pinctrl: Allow keeping pinctrl sleep state

When PM or PM_DEVICE is enabled pinctrl sleep state is using for
device suspension. However, there are cases where power management is
not used but we still want to be able to put pins to sleep state, e.g.
device deinit.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
(cherry picked from commit 4b374ec)

Author: nordic-krch

drivers/pinctrl/Kconfig

@@ -34,6 +34,10 @@ config PINCTRL_DYNAMIC
 	  runtime. This can be useful, for example, to change the pins assigned to a
 	  peripheral at early boot stages depending on a certain input.
 
+config PINCTRL_KEEP_SLEEP_STATE
+	bool "Keep sleep state"
+	default y if PM || PM_DEVICE || DEVICE_DEINIT_SUPPORT
+
 source "drivers/pinctrl/Kconfig.b91"
 source "drivers/pinctrl/Kconfig.bflb"
 source "drivers/pinctrl/Kconfig.ambiq"

include/zephyr/drivers/pinctrl.h

@@ -78,7 +78,7 @@ struct pinctrl_dev_config {
 
 /** @cond INTERNAL_HIDDEN */
 
-#if !defined(CONFIG_PM) && !defined(CONFIG_PM_DEVICE)
+#if !defined(CONFIG_PINCTRL_KEEP_SLEEP_STATE)
 /** Out of power management configurations, ignore "sleep" state. */
 #define PINCTRL_SKIP_SLEEP 1
 #endif

tests/drivers/pinctrl/api/prj.conf

@@ -4,3 +4,4 @@
 CONFIG_ZTEST=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_DYNAMIC=y
+CONFIG_DEVICE_DEINIT_SUPPORT=n