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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2024 Inochi Amaoto <inochiama@outlook.com>
*/
#ifndef _PINCTRL_SOPHGO_H
#define _PINCTRL_SOPHGO_H
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include "../core.h"
struct sophgo_pinctrl;
struct sophgo_pin {
u16 id;
u16 flags;
};
struct sophgo_pin_mux_config {
const struct sophgo_pin *pin;
u32 config;
};
/**
* struct sophgo_cfg_ops - pin configuration operations
*
* @pctrl_init: soc specific init callback
* @verify_pinmux_config: verify the pinmux config for a pin
* @verify_pin_group: verify the whole pinmux group
* @dt_node_to_map_post: post init for the pinmux config map
* @compute_pinconf_config: compute pinconf config
* @set_pinconf_config: set pinconf config (the caller holds lock)
* @set_pinmux_config: set mux config (the caller holds lock)
*/
struct sophgo_cfg_ops {
int (*pctrl_init)(struct platform_device *pdev,
struct sophgo_pinctrl *pctrl);
int (*verify_pinmux_config)(const struct sophgo_pin_mux_config *config);
int (*verify_pin_group)(const struct sophgo_pin_mux_config *pinmuxs,
unsigned int npins);
int (*dt_node_to_map_post)(struct device_node *cur,
struct sophgo_pinctrl *pctrl,
struct sophgo_pin_mux_config *pinmuxs,
unsigned int npins);
int (*compute_pinconf_config)(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *sp,
unsigned long *configs,
unsigned int num_configs,
u32 *value, u32 *mask);
int (*set_pinconf_config)(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *sp,
u32 value, u32 mask);
void (*set_pinmux_config)(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *sp, u32 config);
};
/**
* struct sophgo_vddio_cfg_ops - pin vddio operations
*
* @get_pull_up: get resistor for pull up;
* @get_pull_down: get resistor for pull down.
* @get_oc_map: get mapping for typical low level output current value to
* register value map.
* @get_schmitt_map: get mapping for register value to typical schmitt
* threshold.
*/
struct sophgo_vddio_cfg_ops {
int (*get_pull_up)(const struct sophgo_pin *pin, const u32 *psmap);
int (*get_pull_down)(const struct sophgo_pin *pin, const u32 *psmap);
int (*get_oc_map)(const struct sophgo_pin *pin, const u32 *psmap,
const u32 **map);
int (*get_schmitt_map)(const struct sophgo_pin *pin, const u32 *psmap,
const u32 **map);
};
struct sophgo_pinctrl_data {
const struct pinctrl_pin_desc *pins;
const void *pindata;
const char * const *pdnames;
const struct sophgo_vddio_cfg_ops *vddio_ops;
const struct sophgo_cfg_ops *cfg_ops;
const struct pinctrl_ops *pctl_ops;
const struct pinmux_ops *pmx_ops;
const struct pinconf_ops *pconf_ops;
u16 npins;
u16 npds;
u16 pinsize;
};
struct sophgo_pinctrl {
struct device *dev;
struct pinctrl_dev *pctrl_dev;
const struct sophgo_pinctrl_data *data;
struct pinctrl_desc pdesc;
struct mutex mutex;
raw_spinlock_t lock;
void *priv_ctrl;
};
const struct sophgo_pin *sophgo_get_pin(struct sophgo_pinctrl *pctrl,
unsigned long pin_id);
int sophgo_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev, struct device_node *np,
struct pinctrl_map **maps, unsigned int *num_maps);
int sophgo_pmx_set_mux(struct pinctrl_dev *pctldev,
unsigned int fsel, unsigned int gsel);
int sophgo_pconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
unsigned long *configs, unsigned int num_configs);
int sophgo_pconf_group_set(struct pinctrl_dev *pctldev, unsigned int gsel,
unsigned long *configs, unsigned int num_configs);
u32 sophgo_pinctrl_typical_pull_down(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg);
u32 sophgo_pinctrl_typical_pull_up(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg);
int sophgo_pinctrl_oc2reg(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg, u32 target);
int sophgo_pinctrl_reg2oc(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg, u32 reg);
int sophgo_pinctrl_schmitt2reg(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg, u32 target);
int sophgo_pinctrl_reg2schmitt(struct sophgo_pinctrl *pctrl,
const struct sophgo_pin *pin,
const u32 *power_cfg, u32 reg);
int sophgo_pinctrl_probe(struct platform_device *pdev);
#endif /* _PINCTRL_SOPHGO_H */
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