brintos

brintos / linux-shallow public Read only

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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