diff options
Diffstat (limited to 'drivers/pinctrl/sophgo/pinctrl-sophgo.h')
| -rw-r--r-- | drivers/pinctrl/sophgo/pinctrl-sophgo.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/pinctrl/sophgo/pinctrl-sophgo.h b/drivers/pinctrl/sophgo/pinctrl-sophgo.h new file mode 100644 index 000000000000..4cd9b5484894 --- /dev/null +++ b/drivers/pinctrl/sophgo/pinctrl-sophgo.h @@ -0,0 +1,136 @@ +/* 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 */ |