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linux-7.2.3/drivers/pinctrl/spacemit/Kconfig

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+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Sophgo SoC PINCTRL drivers
+#
+
+config PINCTRL_SPACEMIT_K1
+	bool "SpacemiT K1/K3 SoC Pinctrl driver"
+	depends on ARCH_SPACEMIT || COMPILE_TEST
+	depends on OF
+	default ARCH_SPACEMIT
+	select GENERIC_PINCTRL
+	help
+	  Say Y to select the pinctrl driver for K1/K3 SoC.
+	  This pin controller allows selecting the mux function for
+	  each pin. This driver can also be built as a module called
+	  pinctrl-k1.

linux-7.2.3/drivers/pinctrl/spacemit/Makefile

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+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_PINCTRL_SPACEMIT_K1)	+= pinctrl-k1.o

linux-7.2.3/drivers/pinctrl/spacemit/pinctrl-k1.h

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+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2024 Yixun Lan <dlan@gentoo.org> */
+
+#ifndef _PINCTRL_SPACEMIT_K1_H
+#define _PINCTRL_SPACEMIT_K1_H
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinconf.h>
+
+enum spacemit_pin_io_type {
+	IO_TYPE_NONE = 0,
+	IO_TYPE_1V8,
+	IO_TYPE_3V3,
+	IO_TYPE_EXTERNAL,
+};
+
+#define PIN_POWER_STATE_1V8		1800
+#define PIN_POWER_STATE_3V3		3300
+
+#define K1_PIN_IO_TYPE		GENMASK(2, 1)
+
+#define K1_PIN_CAP_IO_TYPE(type)				\
+	FIELD_PREP_CONST(K1_PIN_IO_TYPE, type)
+#define K1_PIN_GET_IO_TYPE(val)					\
+	FIELD_GET(K1_PIN_IO_TYPE, val)
+
+#define K1_FUNC_PIN(_id, _gpiofunc, _io)			\
+	{							\
+		.pin		= (_id),			\
+		.gpiofunc	= (_gpiofunc),			\
+		.flags		= (K1_PIN_CAP_IO_TYPE(_io)),	\
+	}
+
+#endif /* _PINCTRL_SPACEMIT_K1_H */