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linux/drivers/pinctrl/pinctrl-rockchip.h
Jagan Teki fd4ea48688 pinctrl: rockchip: Add RV1126 pinctrl support 
RV1126 has five GPIOs groups - GPIO0 in PD_MMU and GPIO1-4
in PD_BUS.

In GPIO0, up to Lower C group GPIO0_C[3:0] is part of PMU
but rest of the groups from there are part of GRF.

Added pinctrl support for RV1126 and the pull, drv and schmitt
calculations are inferred from [1] authored by Jianqun Xu.

[1] https://github.com/rockchip-linux/kernel/blob/develop-4.19/drivers/pinctrl/pinctrl-rockchip.c

Cc: linux-gpio@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20220818124132.125304-8-jagan@edgeble.ai
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2022-08-22 09:51:08 +02:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2020-2021 Rockchip Electronics Co. Ltd.
*
* Copyright (c) 2013 MundoReader S.L.
* Author: Heiko Stuebner <heiko@sntech.de>
*
* With some ideas taken from pinctrl-samsung:
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
* Copyright (c) 2012 Linaro Ltd
* https://www.linaro.org
*
* and pinctrl-at91:
* Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*/
#ifndef _PINCTRL_ROCKCHIP_H
#define _PINCTRL_ROCKCHIP_H
#define RK_GPIO0_A0 0
#define RK_GPIO0_A1 1
#define RK_GPIO0_A2 2
#define RK_GPIO0_A3 3
#define RK_GPIO0_A4 4
#define RK_GPIO0_A5 5
#define RK_GPIO0_A6 6
#define RK_GPIO0_A7 7
#define RK_GPIO0_B0 8
#define RK_GPIO0_B1 9
#define RK_GPIO0_B2 10
#define RK_GPIO0_B3 11
#define RK_GPIO0_B4 12
#define RK_GPIO0_B5 13
#define RK_GPIO0_B6 14
#define RK_GPIO0_B7 15
#define RK_GPIO0_C0 16
#define RK_GPIO0_C1 17
#define RK_GPIO0_C2 18
#define RK_GPIO0_C3 19
#define RK_GPIO0_C4 20
#define RK_GPIO0_C5 21
#define RK_GPIO0_C6 22
#define RK_GPIO0_C7 23
#define RK_GPIO0_D0 24
#define RK_GPIO0_D1 25
#define RK_GPIO0_D2 26
#define RK_GPIO0_D3 27
#define RK_GPIO0_D4 28
#define RK_GPIO0_D5 29
#define RK_GPIO0_D6 30
#define RK_GPIO0_D7 31
#define RK_GPIO1_A0 32
#define RK_GPIO1_A1 33
#define RK_GPIO1_A2 34
#define RK_GPIO1_A3 35
#define RK_GPIO1_A4 36
#define RK_GPIO1_A5 37
#define RK_GPIO1_A6 38
#define RK_GPIO1_A7 39
#define RK_GPIO1_B0 40
#define RK_GPIO1_B1 41
#define RK_GPIO1_B2 42
#define RK_GPIO1_B3 43
#define RK_GPIO1_B4 44
#define RK_GPIO1_B5 45
#define RK_GPIO1_B6 46
#define RK_GPIO1_B7 47
#define RK_GPIO1_C0 48
#define RK_GPIO1_C1 49
#define RK_GPIO1_C2 50
#define RK_GPIO1_C3 51
#define RK_GPIO1_C4 52
#define RK_GPIO1_C5 53
#define RK_GPIO1_C6 54
#define RK_GPIO1_C7 55
#define RK_GPIO1_D0 56
#define RK_GPIO1_D1 57
#define RK_GPIO1_D2 58
#define RK_GPIO1_D3 59
#define RK_GPIO1_D4 60
#define RK_GPIO1_D5 61
#define RK_GPIO1_D6 62
#define RK_GPIO1_D7 63
#define RK_GPIO2_A0 64
#define RK_GPIO2_A1 65
#define RK_GPIO2_A2 66
#define RK_GPIO2_A3 67
#define RK_GPIO2_A4 68
#define RK_GPIO2_A5 69
#define RK_GPIO2_A6 70
#define RK_GPIO2_A7 71
#define RK_GPIO2_B0 72
#define RK_GPIO2_B1 73
#define RK_GPIO2_B2 74
#define RK_GPIO2_B3 75
#define RK_GPIO2_B4 76
#define RK_GPIO2_B5 77
#define RK_GPIO2_B6 78
#define RK_GPIO2_B7 79
#define RK_GPIO2_C0 80
#define RK_GPIO2_C1 81
#define RK_GPIO2_C2 82
#define RK_GPIO2_C3 83
#define RK_GPIO2_C4 84
#define RK_GPIO2_C5 85
#define RK_GPIO2_C6 86
#define RK_GPIO2_C7 87
#define RK_GPIO2_D0 88
#define RK_GPIO2_D1 89
#define RK_GPIO2_D2 90
#define RK_GPIO2_D3 91
#define RK_GPIO2_D4 92
#define RK_GPIO2_D5 93
#define RK_GPIO2_D6 94
#define RK_GPIO2_D7 95
#define RK_GPIO3_A0 96
#define RK_GPIO3_A1 97
#define RK_GPIO3_A2 98
#define RK_GPIO3_A3 99
#define RK_GPIO3_A4 100
#define RK_GPIO3_A5 101
#define RK_GPIO3_A6 102
#define RK_GPIO3_A7 103
#define RK_GPIO3_B0 104
#define RK_GPIO3_B1 105
#define RK_GPIO3_B2 106
#define RK_GPIO3_B3 107
#define RK_GPIO3_B4 108
#define RK_GPIO3_B5 109
#define RK_GPIO3_B6 110
#define RK_GPIO3_B7 111
#define RK_GPIO3_C0 112
#define RK_GPIO3_C1 113
#define RK_GPIO3_C2 114
#define RK_GPIO3_C3 115
#define RK_GPIO3_C4 116
#define RK_GPIO3_C5 117
#define RK_GPIO3_C6 118
#define RK_GPIO3_C7 119
#define RK_GPIO3_D0 120
#define RK_GPIO3_D1 121
#define RK_GPIO3_D2 122
#define RK_GPIO3_D3 123
#define RK_GPIO3_D4 124
#define RK_GPIO3_D5 125
#define RK_GPIO3_D6 126
#define RK_GPIO3_D7 127
#define RK_GPIO4_A0 128
#define RK_GPIO4_A1 129
#define RK_GPIO4_A2 130
#define RK_GPIO4_A3 131
#define RK_GPIO4_A4 132
#define RK_GPIO4_A5 133
#define RK_GPIO4_A6 134
#define RK_GPIO4_A7 135
#define RK_GPIO4_B0 136
#define RK_GPIO4_B1 137
#define RK_GPIO4_B2 138
#define RK_GPIO4_B3 139
#define RK_GPIO4_B4 140
#define RK_GPIO4_B5 141
#define RK_GPIO4_B6 142
#define RK_GPIO4_B7 143
#define RK_GPIO4_C0 144
#define RK_GPIO4_C1 145
#define RK_GPIO4_C2 146
#define RK_GPIO4_C3 147
#define RK_GPIO4_C4 148
#define RK_GPIO4_C5 149
#define RK_GPIO4_C6 150
#define RK_GPIO4_C7 151
#define RK_GPIO4_D0 152
#define RK_GPIO4_D1 153
#define RK_GPIO4_D2 154
#define RK_GPIO4_D3 155
#define RK_GPIO4_D4 156
#define RK_GPIO4_D5 157
#define RK_GPIO4_D6 158
#define RK_GPIO4_D7 159
enum rockchip_pinctrl_type {
PX30,
RV1108,
RV1126,
RK2928,
RK3066B,
RK3128,
RK3188,
RK3288,
RK3308,
RK3368,
RK3399,
RK3568,
RK3588,
};
/**
* struct rockchip_gpio_regs
* @port_dr: data register
* @port_ddr: data direction register
* @int_en: interrupt enable
* @int_mask: interrupt mask
* @int_type: interrupt trigger type, such as high, low, edge trriger type.
* @int_polarity: interrupt polarity enable register
* @int_bothedge: interrupt bothedge enable register
* @int_status: interrupt status register
* @int_rawstatus: int_status = int_rawstatus & int_mask
* @debounce: enable debounce for interrupt signal
* @dbclk_div_en: enable divider for debounce clock
* @dbclk_div_con: setting for divider of debounce clock
* @port_eoi: end of interrupt of the port
* @ext_port: port data from external
* @version_id: controller version register
*/
struct rockchip_gpio_regs {
u32 port_dr;
u32 port_ddr;
u32 int_en;
u32 int_mask;
u32 int_type;
u32 int_polarity;
u32 int_bothedge;
u32 int_status;
u32 int_rawstatus;
u32 debounce;
u32 dbclk_div_en;
u32 dbclk_div_con;
u32 port_eoi;
u32 ext_port;
u32 version_id;
};
/**
* struct rockchip_iomux
* @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
};
/**
* struct rockchip_drv
* @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;
};
/**
* struct rockchip_pin_bank
* @dev: the pinctrl device bind to the bank
* @reg_base: register base of the gpio bank
* @regmap_pull: optional separate register for additional pull settings
* @clk: clock of the gpio bank
* @db_clk: clock of the gpio debounce
* @irq: interrupt of the gpio bank
* @saved_masks: Saved content of GPIO_INTEN at suspend time.
* @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
* @valid: is all necessary information present
* @of_node: dt node of this bank
* @drvdata: common pinctrl basedata
* @domain: irqdomain of the gpio bank
* @gpio_chip: gpiolib chip
* @grange: gpio range
* @slock: spinlock for the gpio bank
* @toggle_edge_mode: bit mask to toggle (falling/rising) edge mode
* @recalced_mask: bit mask to indicate a need to recalulate the mask
* @route_mask: bits describing the routing pins of per bank
* @deferred_output: gpio output settings to be done after gpio bank probed
* @deferred_lock: mutex for the deferred_output shared btw gpio and pinctrl
*/
struct rockchip_pin_bank {
struct device *dev;
void __iomem *reg_base;
struct regmap *regmap_pull;
struct clk *clk;
struct clk *db_clk;
int irq;
u32 saved_masks;
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];
bool valid;
struct device_node *of_node;
struct rockchip_pinctrl *drvdata;
struct irq_domain *domain;
struct gpio_chip gpio_chip;
struct pinctrl_gpio_range grange;
raw_spinlock_t slock;
const struct rockchip_gpio_regs *gpio_regs;
u32 gpio_type;
u32 toggle_edge_mode;
u32 recalced_mask;
u32 route_mask;
struct list_head deferred_pins;
struct mutex deferred_lock;
};
/**
* struct rockchip_mux_recalced_data: represent a pin iomux data.
* @num: bank number.
* @pin: pin number.
* @bit: index at register.
* @reg: register offset.
* @mask: mask bit
*/
struct rockchip_mux_recalced_data {
u8 num;
u8 pin;
u32 reg;
u8 bit;
u8 mask;
};
enum rockchip_mux_route_location {
ROCKCHIP_ROUTE_SAME = 0,
ROCKCHIP_ROUTE_PMU,
ROCKCHIP_ROUTE_GRF,
};
/**
* struct rockchip_mux_recalced_data: represent a pin iomux data.
* @bank_num: bank number.
* @pin: index at register or used to calc index.
* @func: the min pin.
* @route_location: the mux route location (same, pmu, grf).
* @route_offset: the max pin.
* @route_val: the register offset.
*/
struct rockchip_mux_route_data {
u8 bank_num;
u8 pin;
u8 func;
enum rockchip_mux_route_location route_location;
u32 route_offset;
u32 route_val;
};
struct rockchip_pin_ctrl {
struct rockchip_pin_bank *pin_banks;
u32 nr_banks;
u32 nr_pins;
char *label;
enum rockchip_pinctrl_type type;
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 (*pull_calc_reg)(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
int *reg, u8 *bit);
int (*drv_calc_reg)(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
int *reg, u8 *bit);
int (*schmitt_calc_reg)(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
int *reg, u8 *bit);
};
struct rockchip_pin_config {
unsigned int func;
unsigned long *configs;
unsigned int nconfigs;
};
enum pin_config_param;
struct rockchip_pin_deferred {
struct list_head head;
unsigned int pin;
enum pin_config_param param;
u32 arg;
};
/**
* struct rockchip_pin_group: represent group of pins of a pinmux function.
* @name: name of the pin group, used to lookup the group.
* @pins: the pins included in this group.
* @npins: number of pins included in this group.
* @data: local pin configuration
*/
struct rockchip_pin_group {
const char *name;
unsigned int npins;
unsigned int *pins;
struct rockchip_pin_config *data;
};
/**
* struct rockchip_pmx_func: represent a pin function.
* @name: name of the pin function, used to lookup the function.
* @groups: one or more names of pin groups that provide this function.
* @ngroups: number of groups included in @groups.
*/
struct rockchip_pmx_func {
const char *name;
const char **groups;
u8 ngroups;
};
struct rockchip_pinctrl {
struct regmap *regmap_base;
int reg_size;
struct regmap *regmap_pull;
struct regmap *regmap_pmu;
struct device *dev;
struct rockchip_pin_ctrl *ctrl;
struct pinctrl_desc pctl;
struct pinctrl_dev *pctl_dev;
struct rockchip_pin_group *groups;
unsigned int ngroups;
struct rockchip_pmx_func *functions;
unsigned int nfunctions;
};
#endif
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