/* 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 (0 x1 << 1 )
#define EINT_DBNC_SET_EN (0 x1 << 0 )
#define MTK_PINCTRL_NOT_SUPPORT (0 xffff)
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_ies : Special pin setting for input enable
* @ n_spec_ies : Number of entries in spec_ies
* @ spec_pupd : Special pull up / down setting
* @ n_spec_pupd : Number of entries in spec_pupd
* @ spec_smt : Special pin setting for schmitt
* @ n_spec_smt : Number of entries in spec_smt
* @ 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 .
* @ mt8365_set_clr_mode : In mt8365 , some pins won ' t set correcty because they
* need to use the main R / W register to read / update / write the modes instead of
* the SET / CLR register .
*
* @ 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;
const struct mtk_pin_ies_smt_set *spec_ies;
unsigned int n_spec_ies;
const struct mtk_pin_spec_pupd_set_samereg *spec_pupd;
unsigned int n_spec_pupd;
const struct mtk_pin_ies_smt_set *spec_smt;
unsigned int n_spec_smt;
int (*spec_pull_set)(struct regmap *regmap,
const struct mtk_pinctrl_devdata *devdata,
unsigned int pin, bool isup, unsigned int r1r0);
int (*spec_ies_smt_set)(struct regmap *reg,
const struct mtk_pinctrl_devdata *devdata,
unsigned int pin, 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);
int (*mt8365_set_clr_mode)(struct regmap *regmap,
unsigned int bit, unsigned int reg_pullen, unsigned int reg_pullsel,
bool enable, bool isup);
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;
unsigned int mode_mask;
unsigned int mode_per_reg;
unsigned int mode_shf;
};
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_common_probe(struct platform_device *pdev);
int mtk_pctrl_spec_pull_set_samereg(struct regmap *regmap,
const struct mtk_pinctrl_devdata *devdata,
unsigned int pin, bool isup, unsigned int r1r0);
int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap,
const struct mtk_pinctrl_devdata *devdata,
unsigned int pin, int value, enum pin_config_param arg);
extern const struct dev_pm_ops mtk_eint_pm_ops;
#endif /* __PINCTRL_MTK_COMMON_H */
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