/* SPDX-License-Identifier: GPL-2.0+ */ /* * (C) Copyright 2019 Rockchip Electronics Co., Ltd */ #ifndef __DRIVERS_PINCTRL_ROCKCHIP_H #define __DRIVERS_PINCTRL_ROCKCHIP_H #include #include /** * Encode variants of iomux registers into a type variable */ #define IOMUX_GPIO_ONLY BIT(0) #define IOMUX_WIDTH_4BIT BIT(1) #define IOMUX_SOURCE_PMU BIT(2) #define IOMUX_UNROUTED BIT(3) #define IOMUX_WIDTH_3BIT BIT(4) #define IOMUX_8WIDTH_2BIT BIT(5) /** * Defined some common pins constants */ #define ROCKCHIP_PULL_BITS_PER_PIN 2 #define ROCKCHIP_PULL_PINS_PER_REG 8 #define ROCKCHIP_PULL_BANK_STRIDE 16 #define ROCKCHIP_DRV_BITS_PER_PIN 2 #define ROCKCHIP_DRV_PINS_PER_REG 8 #define ROCKCHIP_DRV_BANK_STRIDE 16 #define ROCKCHIP_DRV_3BITS_PER_PIN 3 /** * @type: iomux variant using IOMUX_* constants * @offset: if initialized to -1 it will be autocalculated, by specifying * an initial offset value the relevant source offset can be reset * to a new value for autocalculating the following iomux registers. */ struct rockchip_iomux { int type; int offset; }; /** * enum type index corresponding to rockchip_perpin_drv_list arrays index. */ enum rockchip_pin_drv_type { DRV_TYPE_IO_DEFAULT = 0, DRV_TYPE_IO_1V8_OR_3V0, DRV_TYPE_IO_1V8_ONLY, DRV_TYPE_IO_1V8_3V0_AUTO, DRV_TYPE_IO_3V3_ONLY, DRV_TYPE_MAX }; /** * enum type index corresponding to rockchip_pull_list arrays index. */ enum rockchip_pin_pull_type { PULL_TYPE_IO_DEFAULT = 0, PULL_TYPE_IO_1V8_ONLY, PULL_TYPE_MAX }; /** * @drv_type: drive strength variant using rockchip_perpin_drv_type * @offset: if initialized to -1 it will be autocalculated, by specifying * an initial offset value the relevant source offset can be reset * to a new value for autocalculating the following drive strength * registers. if used chips own cal_drv func instead to calculate * registers offset, the variant could be ignored. */ struct rockchip_drv { enum rockchip_pin_drv_type drv_type; int offset; }; /** * @priv: common pinctrl private basedata * @pin_base: first pin number * @nr_pins: number of pins in this bank * @name: name of the bank * @bank_num: number of the bank, to account for holes * @iomux: array describing the 4 iomux sources of the bank * @drv: array describing the 4 drive strength sources of the bank * @pull_type: array describing the 4 pull type sources of the bank * @recalced_mask: bits describing the mux recalced pins of per bank * @route_mask: bits describing the routing pins of per bank */ struct rockchip_pin_bank { struct rockchip_pinctrl_priv *priv; u32 pin_base; u8 nr_pins; char *name; u8 bank_num; struct rockchip_iomux iomux[4]; struct rockchip_drv drv[4]; enum rockchip_pin_pull_type pull_type[4]; u32 recalced_mask; u32 route_mask; }; #define PIN_BANK(id, pins, label) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ }, \ } #define PIN_BANK_IOMUX_FLAGS(id, pins, label, iom0, iom1, iom2, iom3) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .type = iom0, .offset = -1 }, \ { .type = iom1, .offset = -1 }, \ { .type = iom2, .offset = -1 }, \ { .type = iom3, .offset = -1 }, \ }, \ } #define PIN_BANK_DRV_FLAGS(id, pins, label, type0, type1, type2, type3) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ }, \ .drv = { \ { .drv_type = type0, .offset = -1 }, \ { .drv_type = type1, .offset = -1 }, \ { .drv_type = type2, .offset = -1 }, \ { .drv_type = type3, .offset = -1 }, \ }, \ } #define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1, \ drv2, drv3, pull0, pull1, \ pull2, pull3) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ { .offset = -1 }, \ }, \ .drv = { \ { .drv_type = drv0, .offset = -1 }, \ { .drv_type = drv1, .offset = -1 }, \ { .drv_type = drv2, .offset = -1 }, \ { .drv_type = drv3, .offset = -1 }, \ }, \ .pull_type[0] = pull0, \ .pull_type[1] = pull1, \ .pull_type[2] = pull2, \ .pull_type[3] = pull3, \ } #define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \ iom2, iom3, drv0, drv1, drv2, \ drv3, offset0, offset1, \ offset2, offset3) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .type = iom0, .offset = -1 }, \ { .type = iom1, .offset = -1 }, \ { .type = iom2, .offset = -1 }, \ { .type = iom3, .offset = -1 }, \ }, \ .drv = { \ { .drv_type = drv0, .offset = offset0 }, \ { .drv_type = drv1, .offset = offset1 }, \ { .drv_type = drv2, .offset = offset2 }, \ { .drv_type = drv3, .offset = offset3 }, \ }, \ } #define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins, \ label, iom0, iom1, iom2, \ iom3, drv0, drv1, drv2, \ drv3, offset0, offset1, \ offset2, offset3, pull0, \ pull1, pull2, pull3) \ { \ .bank_num = id, \ .nr_pins = pins, \ .name = label, \ .iomux = { \ { .type = iom0, .offset = -1 }, \ { .type = iom1, .offset = -1 }, \ { .type = iom2, .offset = -1 }, \ { .type = iom3, .offset = -1 }, \ }, \ .drv = { \ { .drv_type = drv0, .offset = offset0 }, \ { .drv_type = drv1, .offset = offset1 }, \ { .drv_type = drv2, .offset = offset2 }, \ { .drv_type = drv3, .offset = offset3 }, \ }, \ .pull_type[0] = pull0, \ .pull_type[1] = pull1, \ .pull_type[2] = pull2, \ .pull_type[3] = pull3, \ } /** * struct rockchip_mux_recalced_data: recalculate a pin iomux data. * @num: bank number. * @pin: pin number. * @reg: register offset. * @bit: index at register. * @mask: mask bit */ struct rockchip_mux_recalced_data { u8 num; u8 pin; u32 reg; u8 bit; u8 mask; }; /** * struct rockchip_mux_route_data: route a pin iomux data. * @bank_num: bank number. * @pin: index at register or used to calc index. * @func: the min pin. * @route_offset: the max pin. * @route_val: the register offset. */ struct rockchip_mux_route_data { u8 bank_num; u8 pin; u8 func; u32 route_offset; u32 route_val; }; /** */ struct rockchip_pin_ctrl { struct rockchip_pin_bank *pin_banks; u32 nr_banks; u32 nr_pins; int grf_mux_offset; int pmu_mux_offset; int grf_drv_offset; int pmu_drv_offset; struct rockchip_mux_recalced_data *iomux_recalced; u32 niomux_recalced; struct rockchip_mux_route_data *iomux_routes; u32 niomux_routes; int (*set_mux)(struct rockchip_pin_bank *bank, int pin, int mux); int (*set_pull)(struct rockchip_pin_bank *bank, int pin_num, int pull); int (*set_drive)(struct rockchip_pin_bank *bank, int pin_num, int strength); int (*set_schmitt)(struct rockchip_pin_bank *bank, int pin_num, int enable); }; /** */ struct rockchip_pinctrl_priv { struct rockchip_pin_ctrl *ctrl; struct regmap *regmap_base; struct regmap *regmap_pmu; }; extern const struct pinctrl_ops rockchip_pinctrl_ops; int rockchip_pinctrl_probe(struct udevice *dev); void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin, int *reg, u8 *bit, int *mask); bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin, int mux, u32 *reg, u32 *value); int rockchip_get_mux_data(int mux_type, int pin, u8 *bit, int *mask); int rockchip_translate_drive_value(int type, int strength); int rockchip_translate_pull_value(int type, int pull); #endif /* __DRIVERS_PINCTRL_ROCKCHIP_H */