pinctrl: starfive: Add StarFive JH7110 sys controller driver

Add pinctrl driver for StarFive JH7110 SoC sys pinctrl controller.
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/r/20230209143702.44408-4-hal.feng@starfivetech.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

MAINTAINERS

@@ -19896,7 +19896,7 @@ M:	Jianlong Huang <jianlong.huang@starfivetech.com>
 L:	linux-gpio@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pinctrl/starfive,jh71*.yaml
-F:	drivers/pinctrl/starfive/
+F:	drivers/pinctrl/starfive/pinctrl-starfive-jh71*
 F:	include/dt-bindings/pinctrl/pinctrl-starfive-jh7100.h
 F:	include/dt-bindings/pinctrl/starfive,jh7110-pinctrl.h
 

drivers/pinctrl/starfive/Kconfig

@@ -16,3 +16,24 @@ config PINCTRL_STARFIVE_JH7100
 	  This also provides an interface to the GPIO pins not used by other
 	  peripherals supporting inputs, outputs, configuring pull-up/pull-down
 	  and interrupts on input changes.
+
+config PINCTRL_STARFIVE_JH7110
+	bool
+	select GENERIC_PINCTRL_GROUPS
+	select GENERIC_PINMUX_FUNCTIONS
+	select GENERIC_PINCONF
+	select GPIOLIB
+	select GPIOLIB_IRQCHIP
+	select OF_GPIO
+
+config PINCTRL_STARFIVE_JH7110_SYS
+	tristate "System pinctrl and GPIO driver for the StarFive JH7110 SoC"
+	depends on SOC_STARFIVE  || COMPILE_TEST
+	depends on OF
+	select PINCTRL_STARFIVE_JH7110
+	default SOC_STARFIVE
+	help
+	  Say yes here to support system pin control on the StarFive JH7110 SoC.
+	  This also provides an interface to the GPIO pins not used by other
+	  peripherals supporting inputs, outputs, configuring pull-up/pull-down
+	  and interrupts on input changes.

drivers/pinctrl/starfive/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
 obj-$(CONFIG_PINCTRL_STARFIVE_JH7100)	+= pinctrl-starfive-jh7100.o
+
+obj-$(CONFIG_PINCTRL_STARFIVE_JH7110)		+= pinctrl-starfive-jh7110.o
+obj-$(CONFIG_PINCTRL_STARFIVE_JH7110_SYS)	+= pinctrl-starfive-jh7110-sys.o

drivers/pinctrl/starfive/pinctrl-starfive-jh7110.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Pinctrl / GPIO driver for StarFive JH7110 SoC
+ *
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ */
+
+#ifndef __PINCTRL_STARFIVE_JH7110_H__
+#define __PINCTRL_STARFIVE_JH7110_H__
+
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinmux.h>
+
+struct jh7110_pinctrl {
+	struct device *dev;
+	struct gpio_chip gc;
+	struct pinctrl_gpio_range gpios;
+	raw_spinlock_t lock;
+	void __iomem *base;
+	struct pinctrl_dev *pctl;
+	/* register read/write mutex */
+	struct mutex mutex;
+	const struct jh7110_pinctrl_soc_info *info;
+};
+
+struct jh7110_gpio_irq_reg {
+	unsigned int is_reg_base;
+	unsigned int ic_reg_base;
+	unsigned int ibe_reg_base;
+	unsigned int iev_reg_base;
+	unsigned int ie_reg_base;
+	unsigned int ris_reg_base;
+	unsigned int mis_reg_base;
+};
+
+struct jh7110_pinctrl_soc_info {
+	const struct pinctrl_pin_desc *pins;
+	unsigned int npins;
+	unsigned int ngpios;
+	unsigned int gc_base;
+
+	/* gpio dout/doen/din/gpioinput register */
+	unsigned int dout_reg_base;
+	unsigned int dout_mask;
+	unsigned int doen_reg_base;
+	unsigned int doen_mask;
+	unsigned int gpi_reg_base;
+	unsigned int gpi_mask;
+	unsigned int gpioin_reg_base;
+
+	const struct jh7110_gpio_irq_reg *irq_reg;
+
+	/* generic pinmux */
+	int (*jh7110_set_one_pin_mux)(struct jh7110_pinctrl *sfp,
+				      unsigned int pin,
+				      unsigned int din, u32 dout,
+				      u32 doen, u32 func);
+	/* gpio chip */
+	int (*jh7110_get_padcfg_base)(struct jh7110_pinctrl *sfp,
+				      unsigned int pin);
+	void (*jh7110_gpio_irq_handler)(struct irq_desc *desc);
+	int (*jh7110_gpio_init_hw)(struct gpio_chip *gc);
+};
+
+void jh7110_set_gpiomux(struct jh7110_pinctrl *sfp, unsigned int pin,
+			unsigned int din, u32 dout, u32 doen);
+int jh7110_pinctrl_probe(struct platform_device *pdev);
+struct jh7110_pinctrl *jh7110_from_irq_desc(struct irq_desc *desc);
+
+#endif /* __PINCTRL_STARFIVE_JH7110_H__ */