pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings

Add pinctrl-paris core that implements vendor dt-binding which MediaTek
tablet, box and smartphone-based SoCs such as MT81xx, MT27xx, and MT67xx
SoCs really want to depend on. The driver is just completely rewritten
according to pinctrl-mtk-common.c but uses the new logic from
pinctrl-mtk-common-v2.c to have an elegant way to support new SoCs in the
future.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/Kconfig

@@ -24,6 +24,15 @@ config PINCTRL_MTK_MOORE
 	select GPIOLIB
 	select OF_GPIO
 
+config PINCTRL_MTK_PARIS
+	bool "MediaTek Paris Core that implements vendor binding"
+	depends on OF
+	select PINMUX
+	select GENERIC_PINCONF
+	select GPIOLIB
+	select EINT_MTK
+	select OF_GPIO
+
 # For ARMv7 SoCs
 config PINCTRL_MT2701
 	bool "Mediatek MT2701 pin control"

drivers/pinctrl/mediatek/Makefile

@@ -3,6 +3,7 @@
 obj-$(CONFIG_EINT_MTK)		+= mtk-eint.o
 obj-$(CONFIG_PINCTRL_MTK)	+= pinctrl-mtk-common.o
 obj-$(CONFIG_PINCTRL_MTK_MOORE) += pinctrl-moore.o pinctrl-mtk-common-v2.o
+obj-$(CONFIG_PINCTRL_MTK_PARIS) += pinctrl-paris.o pinctrl-mtk-common-v2.o
 
 # SoC Drivers
 obj-$(CONFIG_PINCTRL_MT2701)	+= pinctrl-mt2701.o

drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h

@@ -174,6 +174,12 @@ struct mtk_pin_desc {
 	struct mtk_func_desc *funcs;
 };
 
+struct mtk_pinctrl_group {
+	const char	*name;
+	unsigned long	config;
+	unsigned	pin;
+};
+
 struct mtk_pinctrl;
 
 /* struct mtk_pin_soc - the structure that holds SoC-specific data */
@@ -228,6 +234,8 @@ struct mtk_pinctrl {
 	struct gpio_chip		chip;
 	const struct mtk_pin_soc        *soc;
 	struct mtk_eint			*eint;
+	struct mtk_pinctrl_group	*groups;
+	const char          **grp_names;
 };
 
 void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set);

drivers/pinctrl/mediatek/pinctrl-paris.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ *
+ * Author: Sean Wang <sean.wang@mediatek.com>
+ *	   Zhiyong Tao <zhiyong.tao@mediatek.com>
+ *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
+ */
+#ifndef __PINCTRL_PARIS_H
+#define __PINCTRL_PARIS_H
+
+#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+
+#include "../core.h"
+#include "../pinconf.h"
+#include "../pinctrl-utils.h"
+#include "../pinmux.h"
+#include "mtk-eint.h"
+#include "pinctrl-mtk-common-v2.h"
+
+#define MTK_RANGE(_a)		{ .range = (_a), .nranges = ARRAY_SIZE(_a), }
+
+#define MTK_EINT_FUNCTION(_eintmux, _eintnum)				\
+	{							\
+		.eint_m = _eintmux,					\
+		.eint_n = _eintnum,					\
+	}
+
+#define MTK_FUNCTION(_val, _name)				\
+	{							\
+		.muxval = _val,					\
+		.name = _name,					\
+	}
+
+#define MTK_PIN(_number, _name, _eint, _drv_n, ...) {	\
+		.number = _number,			\
+		.name = _name,				\
+		.eint = _eint,				\
+		.drv_n = _drv_n,			\
+		.funcs = (struct mtk_func_desc[]){	\
+			__VA_ARGS__, { } },				\
+	}
+
+#define PINCTRL_PIN_GROUP(name, id)			\
+	{						\
+		name,					\
+		id##_pins,				\
+		ARRAY_SIZE(id##_pins),			\
+		id##_funcs,				\
+	}
+
+int mtk_paris_pinctrl_probe(struct platform_device *pdev,
+			    const struct mtk_pin_soc *soc);
+
+#endif /* __PINCTRL_PARIS_H */