drivers: pinctrl: stm32: initial version

Add initial version for STM32 pinctrl driver. Driver has been written
re-using many of the already existing parts in
drivers/pinmux/pinmux_stm32.c.

Signed-off-by: Gerard Marull-Paretas <[email protected]>

Author: gmarull

drivers/pinctrl/CMakeLists.txt

@@ -3,3 +3,4 @@
 
 zephyr_library()
 zephyr_library_sources(common.c)
+zephyr_library_sources_ifdef(CONFIG_PINCTRL_STM32 pinctrl_stm32.c)

drivers/pinctrl/Kconfig

@@ -29,4 +29,6 @@ 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.
 
+source "drivers/pinctrl/Kconfig.stm32"
+
 endif # PINCTRL

drivers/pinctrl/Kconfig.stm32

@@ -0,0 +1,17 @@
+# Copyright (c) 2021 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config PINCTRL_STM32
+	bool "Pin controller driver for STM32 MCUs"
+	depends on SOC_FAMILY_STM32
+	select PINCTRL_STORE_REG if SOC_SERIES_STM32F1X
+	default y
+	help
+	  Enable pin controller driver for STM32 MCUs
+
+config PINCTRL_STM32_REMAP_INIT_PRIORITY
+	int "Remap initialization priority"
+	default 2
+	help
+	  Initialization priority for the routine in charge of configuring the
+	  remap for pins PA11/12.