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