Merge patch series "Introduce Intel Tangier pinctrl driver"

Raag Jadav <raag.jadav@intel.com> says:

Merrifield and Moorefield pinctrl driver implementations are similar
in terms of how they access the hardware. We can consolidate their
pinctrl functionalities into a common library driver.

This patch set introduces:

1. Intel Tangier driver that supports the common pinctrl functionalities
   for Merrifield and Moorefield platforms.

2. Intel Tangier adaptation for Merrifield pinctrl driver.

3. Intel Tangier adaptation for Moorefield pinctrl driver.

Tested on Intel Edison platform.
No deviation observed in the contents of below entries before and after
this patchset.

- /proc/interrupts
- /sys/kernel/debug/gpio
- /sys/kernel/debug/pinctrl/*/pins

Link: https://lore.kernel.org/r/20230814054033.12004-1-raag.jadav@intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Author: andy-shev

drivers/pinctrl/intel/Kconfig

@@ -36,28 +36,6 @@ config PINCTRL_LYNXPOINT
 	  provides an interface that allows configuring of PCH pins and
 	  using them as GPIOs.
 
-config PINCTRL_MERRIFIELD
-	tristate "Intel Merrifield pinctrl driver"
-	depends on X86_INTEL_MID
-	select PINMUX
-	select PINCONF
-	select GENERIC_PINCONF
-	help
-	  Merrifield Family-Level Interface Shim (FLIS) driver provides an
-	  interface that allows configuring of SoC pins and using them as
-	  GPIOs.
-
-config PINCTRL_MOOREFIELD
-	tristate "Intel Moorefield pinctrl driver"
-	depends on X86_INTEL_MID
-	select PINMUX
-	select PINCONF
-	select GENERIC_PINCONF
-	help
-	  Moorefield Family-Level Interface Shim (FLIS) driver provides an
-	  interface that allows configuring of SoC pins and using them as
-	  GPIOs.
-
 config PINCTRL_INTEL
 	tristate
 	select PINMUX
@@ -187,4 +165,5 @@ config PINCTRL_TIGERLAKE
 	  This pinctrl driver provides an interface that allows configuring
 	  of Intel Tiger Lake PCH pins and using them as GPIOs.
 
+source "drivers/pinctrl/intel/Kconfig.tng"
 endmenu

drivers/pinctrl/intel/Kconfig.tng

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Intel Tangier and compatible pin control drivers
+
+if X86_INTEL_MID || COMPILE_TEST
+
+config PINCTRL_TANGIER
+	tristate
+	select PINMUX
+	select PINCONF
+	select GENERIC_PINCONF
+	help
+	  This is a library driver for Intel Tangier pin controller and to
+	  be selected and used by respective compatible platform drivers.
+
+	  If built as a module its name will be pinctrl-tangier.
+
+config PINCTRL_MERRIFIELD
+	tristate "Intel Merrifield pinctrl driver"
+	select PINCTRL_TANGIER
+	help
+	  Intel Merrifield Family-Level Interface Shim (FLIS) driver provides
+	  an interface that allows configuring of SoC pins and using them as
+	  GPIOs.
+
+config PINCTRL_MOOREFIELD
+	tristate "Intel Moorefield pinctrl driver"
+	select PINCTRL_TANGIER
+	help
+	  Intel Moorefield Family-Level Interface Shim (FLIS) driver provides
+	  an interface that allows configuring of SoC pins and using them as
+	  GPIOs.
+
+endif

drivers/pinctrl/intel/Makefile

@@ -4,6 +4,7 @@
 obj-$(CONFIG_PINCTRL_BAYTRAIL)		+= pinctrl-baytrail.o
 obj-$(CONFIG_PINCTRL_CHERRYVIEW)	+= pinctrl-cherryview.o
 obj-$(CONFIG_PINCTRL_LYNXPOINT)		+= pinctrl-lynxpoint.o
+obj-$(CONFIG_PINCTRL_TANGIER)		+= pinctrl-tangier.o
 obj-$(CONFIG_PINCTRL_MERRIFIELD)	+= pinctrl-merrifield.o
 obj-$(CONFIG_PINCTRL_MOOREFIELD)	+= pinctrl-moorefield.o
 obj-$(CONFIG_PINCTRL_INTEL)		+= pinctrl-intel.o