pinctrl: sophgo: add support for CV1800B SoC

Sophgo CV1800 series SoCs share common control logic but have
different register mapping. For maintenance, split the driver
and pin definition of the SoC.

Add base driver for CV1800 series SoC and pin definition of
CV1800B.

Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Link: https://lore.kernel.org/IA1PR20MB4953B260E04EC53F6A01EB30BBB32@IA1PR20MB4953.namprd20.prod.outlook.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: inochisa

drivers/pinctrl/Kconfig

@@ -583,6 +583,7 @@ source "drivers/pinctrl/qcom/Kconfig"
 source "drivers/pinctrl/realtek/Kconfig"
 source "drivers/pinctrl/renesas/Kconfig"
 source "drivers/pinctrl/samsung/Kconfig"
+source "drivers/pinctrl/sophgo/Kconfig"
 source "drivers/pinctrl/spear/Kconfig"
 source "drivers/pinctrl/sprd/Kconfig"
 source "drivers/pinctrl/starfive/Kconfig"

drivers/pinctrl/Makefile

@@ -73,6 +73,7 @@ obj-y				+= qcom/
 obj-$(CONFIG_ARCH_REALTEK)      += realtek/
 obj-$(CONFIG_PINCTRL_RENESAS)	+= renesas/
 obj-$(CONFIG_PINCTRL_SAMSUNG)	+= samsung/
+obj-y				+= sophgo/
 obj-$(CONFIG_PINCTRL_SPEAR)	+= spear/
 obj-y				+= sprd/
 obj-$(CONFIG_SOC_STARFIVE)	+= starfive/

drivers/pinctrl/sophgo/Kconfig

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Sophgo SoC PINCTRL drivers
+#
+
+config PINCTRL_SOPHGO_CV18XX
+	bool
+	select GENERIC_PINCTRL_GROUPS
+	select GENERIC_PINMUX_FUNCTIONS
+	select GENERIC_PINCONF
+
+config PINCTRL_SOPHGO_CV1800B
+	tristate "Sophgo CV1800B SoC Pinctrl driver"
+	depends on ARCH_SOPHGO || COMPILE_TEST
+	depends on OF
+	select PINCTRL_SOPHGO_CV18XX
+	help
+	  Say Y to select the pinctrl driver for CV1800B SoC.
+	  This pin controller allows selecting the mux function for
+	  each pin. This driver can also be built as a module called
+	  pinctrl-cv1800b.

drivers/pinctrl/sophgo/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_PINCTRL_SOPHGO_CV18XX)	+= pinctrl-cv18xx.o
+obj-$(CONFIG_PINCTRL_SOPHGO_CV1800B)	+= pinctrl-cv1800b.o