diff options
Diffstat (limited to 'drivers/pinctrl/sophgo/pinctrl-cv18xx.h')
| -rw-r--r-- | drivers/pinctrl/sophgo/pinctrl-cv18xx.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/pinctrl/sophgo/pinctrl-cv18xx.h b/drivers/pinctrl/sophgo/pinctrl-cv18xx.h new file mode 100644 index 000000000000..1a9998abb3b7 --- /dev/null +++ b/drivers/pinctrl/sophgo/pinctrl-cv18xx.h @@ -0,0 +1,155 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2024 Inochi Amaoto <inochiama@outlook.com> + */ + +#ifndef _PINCTRL_SOPHGO_CV18XX_H +#define _PINCTRL_SOPHGO_CV18XX_H + +#include <linux/bits.h> +#include <linux/bitfield.h> +#include <linux/device.h> +#include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinconf.h> + +enum cv1800_pin_io_type { + IO_TYPE_1V8_ONLY = 0, + IO_TYPE_1V8_OR_3V3 = 1, + IO_TYPE_AUDIO = 2, + IO_TYPE_ETH = 3 +}; + +#define CV1800_PINCONF_AREA_SYS 0 +#define CV1800_PINCONF_AREA_RTC 1 + +struct cv1800_pinmux { + u16 offset; + u8 area; + u8 max; +}; + +struct cv1800_pinmux2 { + u16 offset; + u8 area; + u8 max; + u8 pfunc; +}; + +struct cv1800_pinconf { + u16 offset; + u8 area; +}; + +#define CV1800_PIN_HAVE_MUX2 BIT(0) +#define CV1800_PIN_IO_TYPE GENMASK(2, 1) + +#define CV1800_PIN_FLAG_IO_TYPE(type) \ + FIELD_PREP_CONST(CV1800_PIN_IO_TYPE, type) +struct cv1800_pin { + u16 pin; + u16 flags; + u8 power_domain; + struct cv1800_pinmux mux; + struct cv1800_pinmux2 mux2; + struct cv1800_pinconf conf; +}; + +#define PIN_POWER_STATE_1V8 1800 +#define PIN_POWER_STATE_3V3 3300 + +/** + * struct cv1800_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 cv1800_vddio_cfg_ops { + int (*get_pull_up)(struct cv1800_pin *pin, const u32 *psmap); + int (*get_pull_down)(struct cv1800_pin *pin, const u32 *psmap); + int (*get_oc_map)(struct cv1800_pin *pin, const u32 *psmap, + const u32 **map); + int (*get_schmitt_map)(struct cv1800_pin *pin, const u32 *psmap, + const u32 **map); +}; + +struct cv1800_pinctrl_data { + const struct pinctrl_pin_desc *pins; + const struct cv1800_pin *pindata; + const char * const *pdnames; + const struct cv1800_vddio_cfg_ops *vddio_ops; + u16 npins; + u16 npd; +}; + +static inline enum cv1800_pin_io_type cv1800_pin_io_type(struct cv1800_pin *pin) +{ + return FIELD_GET(CV1800_PIN_IO_TYPE, pin->flags); +}; + +int cv1800_pinctrl_probe(struct platform_device *pdev); + +#define CV1800_FUNC_PIN(_id, _power_domain, _type, \ + _mux_area, _mux_offset, _mux_func_max) \ + { \ + .pin = (_id), \ + .power_domain = (_power_domain), \ + .flags = CV1800_PIN_FLAG_IO_TYPE(_type), \ + .mux = { \ + .area = (_mux_area), \ + .offset = (_mux_offset), \ + .max = (_mux_func_max), \ + }, \ + } + +#define CV1800_GENERAL_PIN(_id, _power_domain, _type, \ + _mux_area, _mux_offset, _mux_func_max, \ + _conf_area, _conf_offset) \ + { \ + .pin = (_id), \ + .power_domain = (_power_domain), \ + .flags = CV1800_PIN_FLAG_IO_TYPE(_type), \ + .mux = { \ + .area = (_mux_area), \ + .offset = (_mux_offset), \ + .max = (_mux_func_max), \ + }, \ + .conf = { \ + .area = (_conf_area), \ + .offset = (_conf_offset), \ + }, \ + } + +#define CV1800_GENERATE_PIN_MUX2(_id, _power_domain, _type, \ + _mux_area, _mux_offset, _mux_func_max, \ + _mux2_area, _mux2_offset, \ + _mux2_func_max, \ + _conf_area, _conf_offset) \ + { \ + .pin = (_id), \ + .power_domain = (_power_domain), \ + .flags = CV1800_PIN_FLAG_IO_TYPE(_type) | \ + CV1800_PIN_HAVE_MUX2, \ + .mux = { \ + .area = (_mux_area), \ + .offset = (_mux_offset), \ + .max = (_mux_func_max), \ + }, \ + .mux2 = { \ + .area = (_mux2_area), \ + .offset = (_mux2_offset), \ + .max = (_mux2_func_max), \ + }, \ + .conf = { \ + .area = (_conf_area), \ + .offset = (_conf_offset), \ + }, \ + } + +#endif |