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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Pinctrl driver for the Wondermedia SoC's4 *5 * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>6 */7 8#include <linux/gpio/driver.h>9 10/* VT8500 has no enable register in the extgpio bank. */11#define NO_REG 0xFFFF12 13#define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg) \14{ \15 .reg_en = __en, \16 .reg_dir = __dir, \17 .reg_data_out = __dout, \18 .reg_data_in = __din, \19 .reg_pull_en = __pen, \20 .reg_pull_cfg = __pcfg, \21}22 23/* Encode/decode the bank/bit pairs into a pin value */24#define WMT_PIN(__bank, __offset) ((__bank << 5) | __offset)25#define WMT_BANK_FROM_PIN(__pin) (__pin >> 5)26#define WMT_BIT_FROM_PIN(__pin) (__pin & 0x1f)27 28#define WMT_GROUP(__name, __data) \29{ \30 .name = __name, \31 .pins = __data, \32 .npins = ARRAY_SIZE(__data), \33}34 35struct wmt_pinctrl_bank_registers {36 u32 reg_en;37 u32 reg_dir;38 u32 reg_data_out;39 u32 reg_data_in;40 41 u32 reg_pull_en;42 u32 reg_pull_cfg;43};44 45struct wmt_pinctrl_group {46 const char *name;47 const unsigned int *pins;48 const unsigned npins;49};50 51struct wmt_pinctrl_data {52 struct device *dev;53 struct pinctrl_dev *pctl_dev;54 55 /* must be initialized before calling wmt_pinctrl_probe */56 void __iomem *base;57 const struct wmt_pinctrl_bank_registers *banks;58 const struct pinctrl_pin_desc *pins;59 const char * const *groups;60 61 u32 nbanks;62 u32 npins;63 u32 ngroups;64 65 struct gpio_chip gpio_chip;66 struct pinctrl_gpio_range gpio_range;67};68 69int wmt_pinctrl_probe(struct platform_device *pdev,70 struct wmt_pinctrl_data *data);71