/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
*/
#ifndef __PINCTRL_MTK_COMMON_H
#define __PINCTRL_MTK_COMMON_H
#include <linux/pinctrl/pinctrl.h>
#include <linux/regmap.h>
#include <linux/pinctrl/pinconf-generic.h>
#include "mtk-eint.h"
#define NO_EINT_SUPPORT 255
#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)
#define MTK_PINCTRL_NOT_SUPPORT (0xffff)
struct mtk_desc_function {
const char *name;
unsigned char muxval;
};
struct mtk_desc_eint {
unsigned char eintmux;
unsigned char eintnum;
};
struct mtk_desc_pin {
struct pinctrl_pin_desc pin;
const struct mtk_desc_eint eint;
const struct mtk_desc_function *functions;
};
#define MTK_PIN(_pin, _pad, _chip, _eint, ...) \
{ \
.pin = _pin, \
.eint = _eint, \
.functions = (struct mtk_desc_function[]){ \
__VA_ARGS__, { } }, \
}
#define MTK_EINT_FUNCTION(_eintmux, _eintnum) \
{ \
.eintmux = _eintmux, \
.eintnum = _eintnum, \
}
#define MTK_FUNCTION(_val, _name) \
{ \
.muxval = _val, \
.name = _name, \
}
#define SET_ADDR(x, y) (x + (y->devdata->port_align))
#define CLR_ADDR(x, y) (x + (y->devdata->port_align << 1))
struct mtk_pinctrl_group {
const char *name;
unsigned long config;
unsigned pin;
};
/**
* struct mtk_drv_group_desc - Provide driving group data.
* @max_drv: The maximum current of this group.
* @min_drv: The minimum current of this group.
* @low_bit: The lowest bit of this group.
* @high_bit: The highest bit of this group.
* @step: The step current of this group.
*/
struct mtk_drv_group_desc {
unsigned char min_drv;
unsigned char max_drv;
unsigned char low_bit;
unsigned char high_bit;
unsigned char step;
};
#define MTK_DRV_GRP(_min, _max, _low, _high, _step) \
{ \
.min_drv = _min, \
.max_drv = _max, \
.low_bit = _low, \
.high_bit = _high, \
.step = _step, \
}
/**
* struct mtk_pin_drv_grp - Provide each pin driving info.
* @pin: The pin number.
* @offset: The offset of driving register for this pin.
* @bit: The bit of driving register for this pin.
* @grp: The group for this pin belongs to.
*/
struct mtk_pin_drv_grp {
unsigned short pin;
unsigned short offset;
unsigned char bit;
unsigned char grp;
};
#define MTK_PIN_DRV_GRP(_pin, _offset, _bit, _grp) \
{ \
.pin = _pin, \
.offset = _offset, \
.bit = _bit, \
.grp = _grp, \
}
/**
* struct mtk_pin_spec_pupd_set_samereg
* - For special pins' pull up/down setting which resides in same register
* @pin: The pin number.
* @offset: The offset of special pull up/down setting register.
* @pupd_bit: The pull up/down bit in this register.
* @r0_bit: The r0 bit of pull resistor.
* @r1_bit: The r1 bit of pull resistor.
*/
struct mtk_pin_spec_pupd_set_samereg {
unsigned short pin;
unsigned short offset;
unsigned char pupd_bit;
unsigned char r1_bit;
unsigned char r0_bit;
};
#define MTK_PIN_PUPD_SPEC_SR(_pin, _offset, _pupd, _r1, _r0) \
{ \
.pin = _pin, \
.offset = _offset, \
.pupd_bit = _pupd, \
.r1_bit = _r1, \
.r0_bit = _r0, \
}
/**
* struct mtk_pin_ies_set - For special pins' ies and smt setting.
* @start: The start pin number of those special pins.
* @end: The end pin number of those special pins.
* @offset: The offset of special setting register.
* @bit: The bit of special setting register.
*/
struct mtk_pin_ies_smt_set {
unsigned short start;
unsigned short end;
unsigned short offset;
unsigned char bit;
};
#define MTK_PIN_IES_SMT_SPEC(_start, _end, _offset, _bit) \
{ \
.start = _start, \
.end = _end, \
.bit = _bit, \
.offset = _offset, \
}
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 soft;
unsigned int soft_set;
unsigned int soft_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.
* @npins: The number of entries in @pins.
*
* @grp_desc: The driving group info.
* @pin_drv_grp: The driving group for all pins.
* @spec_pull_set: Each SoC may have special pins for pull up/down setting,
* these pins' pull setting are very different, they have separate pull
* up/down bit, R0 and R1 resistor bit, so they need special pull setting.
* If special setting is success, this should return 0, otherwise it should
* return non-zero value.
* @spec_ies_smt_set: Some pins are irregular, their input enable and smt
* control register are discontinuous, but they are mapping together. That
* means when user set smt, input enable is set at the same time. So they
* also need special control. If special control is success, this should
* return 0, otherwise return non-zero value.
* @spec_pinmux_set: In some cases, there are two pinmux functions share
* the same value in the same segment of pinmux control register. If user
* want to use one of the two functions, they need an extra bit setting to
* select the right one.
* @spec_dir_set: In very few SoCs, direction control registers are not
* arranged continuously, they may be cut to parts. So they need special
* dir setting.
* @dir_offset: The direction register offset.
* @pullen_offset: The pull-up/pull-down enable register offset.
* @pinmux_offset: The pinmux register offset.
*
* @type1_start: Some chips have two base addresses for pull select register,
* that means some pins use the first address and others use the second. This
* member record the start of pin number to use the second address.
* @type1_end: The end of pin number to use the second address.
*
* @port_shf: The shift between two registers.
* @port_mask: The mask of register.
* @port_align: Provide clear register and set register step.
*/
struct mtk_pinctrl_devdata {
const struct mtk_desc_pin *pins;
unsigned int npins;
const struct mtk_drv_group_desc *grp_desc;
unsigned int n_grp_cls;
const struct mtk_pin_drv_grp *pin_drv_grp;
unsigned int n_pin_drv_grps;
int (*spec_pull_set)(struct regmap *reg, unsigned int pin,
unsigned char align, bool isup, unsigned int arg);
int (*spec_ies_smt_set)(struct regmap *reg, unsigned int pin,
unsigned char align, int value, enum pin_config_param arg);
void (*spec_pinmux_set)(struct regmap *reg, unsigned int pin,
unsigned int mode);
void (*spec_dir_set)(unsigned int *reg_addr, unsigned int pin);
unsigned int dir_offset;
unsigned int ies_offset;
unsigned int smt_offset;
unsigned int pullen_offset;
unsigned int pullsel_offset;
unsigned int drv_offset;
unsigned int dout_offset;
unsigned int din_offset;
unsigned int pinmux_offset;
unsigned short type1_start;
unsigned short type1_end;
unsigned char port_shf;
unsigned char port_mask;
unsigned char port_align;
struct mtk_eint_hw eint_hw;
struct mtk_eint_regs *eint_regs;
};
struct mtk_pinctrl {
struct regmap *regmap1;
struct regmap *regmap2;
struct pinctrl_desc pctl_desc;
struct device *dev;
struct gpio_chip *chip;
struct mtk_pinctrl_group *groups;
unsigned ngroups;
const char **grp_names;
struct pinctrl_dev *pctl_dev;
const struct mtk_pinctrl_devdata *devdata;
struct mtk_eint *eint;
};
int mtk_pctrl_init(struct platform_device *pdev,
const struct mtk_pinctrl_devdata *data,
struct regmap *regmap);
int mtk_pctrl_spec_pull_set_samereg(struct regmap *regmap,
const struct mtk_pin_spec_pupd_set_samereg *pupd_infos,
unsigned int info_num, unsigned int pin,
unsigned char align, bool isup, unsigned int r1r0);
int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap,
const struct mtk_pin_ies_smt_set *ies_smt_infos, unsigned int info_num,
unsigned int pin, unsigned char align, int value);
extern const struct dev_pm_ops mtk_eint_pm_ops;
#endif /* __PINCTRL_MTK_COMMON_H */