pinctrl: mediatek: Add EINT support to MTK pinctrl driver.

MTK SoC support external interrupt(EINT) from most SoC pins.
Add EINT support to pinctrl driver.
Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com>
Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-mt8135.c

@@ -314,6 +314,29 @@ static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.chip_type = MTK_CHIP_TYPE_BASE,
+	.eint_offsets = {
+		.name = "mt8135_eint",
+		.stat      = 0x000,
+		.ack       = 0x040,
+		.mask      = 0x080,
+		.mask_set  = 0x0c0,
+		.mask_clr  = 0x100,
+		.sens      = 0x140,
+		.sens_set  = 0x180,
+		.sens_clr  = 0x1c0,
+		.pol       = 0x300,
+		.pol_set   = 0x340,
+		.pol_clr   = 0x380,
+		.dom_en    = 0x400,
+		.dbnc_ctrl = 0x500,
+		.dbnc_set  = 0x600,
+		.dbnc_clr  = 0x700,
+		.port_mask = 7,
+		.ports     = 6,
+	},
+	.ap_num = 192,
+	.db_cnt = 16,
 };
 
 static int mt8135_pinctrl_probe(struct platform_device *pdev)

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

@@ -16,10 +16,16 @@
 #define __PINCTRL_MTK_COMMON_H
 
 #include <linux/pinctrl/pinctrl.h>
-#include <linux/spinlock.h>
 #include <linux/regmap.h>
 
 #define NO_EINT_SUPPORT    255
+#define MTK_CHIP_TYPE_BASE     0
+#define MTK_CHIP_TYPE_PMIC     1
+#define MT_EDGE_SENSITIVE           0
+#define MT_LEVEL_SENSITIVE          1
+#define EINT_DBNC_SET_DBNC_BITS     4
+#define EINT_DBNC_RST_BIT           (0x1 << 1)
+#define EINT_DBNC_SET_EN            (0x1 << 0)
 
 struct mtk_desc_function {
 	const char *name;
@@ -115,6 +121,27 @@ struct mtk_pin_drv_grp {
 		.grp = _grp,	\
 	}
 
+struct mtk_eint_offsets {
+	const char *name;
+	unsigned int  stat;
+	unsigned int  ack;
+	unsigned int  mask;
+	unsigned int  mask_set;
+	unsigned int  mask_clr;
+	unsigned int  sens;
+	unsigned int  sens_set;
+	unsigned int  sens_clr;
+	unsigned int  pol;
+	unsigned int  pol_set;
+	unsigned int  pol_clr;
+	unsigned int  dom_en;
+	unsigned int  dbnc_ctrl;
+	unsigned int  dbnc_set;
+	unsigned int  dbnc_clr;
+	u8  port_mask;
+	u8  ports;
+};
+
 /**
  * struct mtk_pinctrl_devdata - Provide HW GPIO related data.
  * @pins: An array describing all pins the pin controller affects.
@@ -165,6 +192,10 @@ struct mtk_pinctrl_devdata {
 	unsigned char  port_shf;
 	unsigned char  port_mask;
 	unsigned char  port_align;
+	unsigned char	chip_type;
+	struct mtk_eint_offsets eint_offsets;
+	unsigned int	ap_num;
+	unsigned int	db_cnt;
 };
 
 struct mtk_pinctrl {
@@ -177,6 +208,8 @@ struct mtk_pinctrl {
 	const char          **grp_names;
 	struct pinctrl_dev      *pctl_dev;
 	const struct mtk_pinctrl_devdata  *devdata;
+	void __iomem		*eint_reg_base;
+	struct irq_domain	*domain;
 };
 
 int mtk_pctrl_init(struct platform_device *pdev,